SlideShare a Scribd company logo
Who is D.L Shell?
Solution
Hi friend,
Donald L. Shell (March 1, 1924 – November 2, 2015) was an American computer scientist who
designed the Shell sort sorting algorithm. He acquired his Ph.D. in Mathematics from the
University of Cincinnati in 1959, and published the shell sort algorithm in the Communications
of the ACM in July that same year.
YOu can read on: https://en.wikipedia.org/wiki/Donald_Shell

More Related Content

More from info961251

What is isomerism How many kinds are there Define each kind and.pdf
What is isomerism How many kinds are there Define each kind and.pdfWhat is isomerism How many kinds are there Define each kind and.pdf
What is isomerism How many kinds are there Define each kind and.pdf
info961251
 
What is the definition of the words, and state the diffe.pdf
What is the definition of the words, and state the diffe.pdfWhat is the definition of the words, and state the diffe.pdf
What is the definition of the words, and state the diffe.pdf
info961251
 
Two sources of radio waves (call them 1 and 2) are separated by a dis.pdf
Two sources of radio waves (call them 1 and 2) are separated by a dis.pdfTwo sources of radio waves (call them 1 and 2) are separated by a dis.pdf
Two sources of radio waves (call them 1 and 2) are separated by a dis.pdf
info961251
 
Use the information in the table to select the image that represents .pdf
Use the information in the table to select the image that represents .pdfUse the information in the table to select the image that represents .pdf
Use the information in the table to select the image that represents .pdf
info961251
 
Triggers can only be used to update table values. PLSQL blocks have.pdf
Triggers can only be used to update table values.  PLSQL blocks have.pdfTriggers can only be used to update table values.  PLSQL blocks have.pdf
Triggers can only be used to update table values. PLSQL blocks have.pdf
info961251
 
TB is a major worldwide disease with new cases arising at an alarmin.pdf
TB is a major worldwide disease with new cases arising at an alarmin.pdfTB is a major worldwide disease with new cases arising at an alarmin.pdf
TB is a major worldwide disease with new cases arising at an alarmin.pdf
info961251
 
7. How did printing technology impact literacy and educationSol.pdf
7. How did printing technology impact literacy and educationSol.pdf7. How did printing technology impact literacy and educationSol.pdf
7. How did printing technology impact literacy and educationSol.pdf
info961251
 
Question 1Theories of Law Subject__________ is a collaborative.pdf
Question 1Theories of Law Subject__________ is a collaborative.pdfQuestion 1Theories of Law Subject__________ is a collaborative.pdf
Question 1Theories of Law Subject__________ is a collaborative.pdf
info961251
 
Q Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdf
Q Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdfQ Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdf
Q Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdf
info961251
 
Please fix the java code (using eclipse)package hw4p1;import jav.pdf
Please fix the java code (using eclipse)package hw4p1;import jav.pdfPlease fix the java code (using eclipse)package hw4p1;import jav.pdf
Please fix the java code (using eclipse)package hw4p1;import jav.pdf
info961251
 
Overview You are tasked with writing a program called Social Security.pdf
Overview You are tasked with writing a program called Social Security.pdfOverview You are tasked with writing a program called Social Security.pdf
Overview You are tasked with writing a program called Social Security.pdf
info961251
 
A geneticist Dr. O. Sophila discovers a new mutation that causes the .pdf
A geneticist Dr. O. Sophila discovers a new mutation that causes the .pdfA geneticist Dr. O. Sophila discovers a new mutation that causes the .pdf
A geneticist Dr. O. Sophila discovers a new mutation that causes the .pdf
info961251
 
o Dfe the cefcien of hermal expansion. What is the relation between t.pdf
o Dfe the cefcien of hermal expansion. What is the relation between t.pdfo Dfe the cefcien of hermal expansion. What is the relation between t.pdf
o Dfe the cefcien of hermal expansion. What is the relation between t.pdf
info961251
 
Monohybrid crosses with incomplete dominance and co-dominance The red.pdf
Monohybrid crosses with incomplete dominance and co-dominance The red.pdfMonohybrid crosses with incomplete dominance and co-dominance The red.pdf
Monohybrid crosses with incomplete dominance and co-dominance The red.pdf
info961251
 
Match the tissues in column A with the characteristics in (Some answe.pdf
Match the tissues in column A with the characteristics in (Some answe.pdfMatch the tissues in column A with the characteristics in (Some answe.pdf
Match the tissues in column A with the characteristics in (Some answe.pdf
info961251
 
Jumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdf
Jumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdfJumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdf
Jumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdf
info961251
 
In metaphase 1 of meiosis, the homologous chromosomes line up side by.pdf
In metaphase 1 of meiosis, the homologous chromosomes line up side by.pdfIn metaphase 1 of meiosis, the homologous chromosomes line up side by.pdf
In metaphase 1 of meiosis, the homologous chromosomes line up side by.pdf
info961251
 
Implement the sequence class from Section 3.2 of the textbook. The d.pdf
Implement the sequence class from Section 3.2 of the textbook. The d.pdfImplement the sequence class from Section 3.2 of the textbook. The d.pdf
Implement the sequence class from Section 3.2 of the textbook. The d.pdf
info961251
 
Gene frequencies for the ABO alleles vary geographically. For exa.pdf
Gene frequencies for the ABO alleles vary geographically. For exa.pdfGene frequencies for the ABO alleles vary geographically. For exa.pdf
Gene frequencies for the ABO alleles vary geographically. For exa.pdf
info961251
 
Explain the factors that determine the binding specificity between t.pdf
Explain the factors that determine the binding specificity between t.pdfExplain the factors that determine the binding specificity between t.pdf
Explain the factors that determine the binding specificity between t.pdf
info961251
 

More from info961251 (20)

What is isomerism How many kinds are there Define each kind and.pdf
What is isomerism How many kinds are there Define each kind and.pdfWhat is isomerism How many kinds are there Define each kind and.pdf
What is isomerism How many kinds are there Define each kind and.pdf
 
What is the definition of the words, and state the diffe.pdf
What is the definition of the words, and state the diffe.pdfWhat is the definition of the words, and state the diffe.pdf
What is the definition of the words, and state the diffe.pdf
 
Two sources of radio waves (call them 1 and 2) are separated by a dis.pdf
Two sources of radio waves (call them 1 and 2) are separated by a dis.pdfTwo sources of radio waves (call them 1 and 2) are separated by a dis.pdf
Two sources of radio waves (call them 1 and 2) are separated by a dis.pdf
 
Use the information in the table to select the image that represents .pdf
Use the information in the table to select the image that represents .pdfUse the information in the table to select the image that represents .pdf
Use the information in the table to select the image that represents .pdf
 
Triggers can only be used to update table values. PLSQL blocks have.pdf
Triggers can only be used to update table values.  PLSQL blocks have.pdfTriggers can only be used to update table values.  PLSQL blocks have.pdf
Triggers can only be used to update table values. PLSQL blocks have.pdf
 
TB is a major worldwide disease with new cases arising at an alarmin.pdf
TB is a major worldwide disease with new cases arising at an alarmin.pdfTB is a major worldwide disease with new cases arising at an alarmin.pdf
TB is a major worldwide disease with new cases arising at an alarmin.pdf
 
7. How did printing technology impact literacy and educationSol.pdf
7. How did printing technology impact literacy and educationSol.pdf7. How did printing technology impact literacy and educationSol.pdf
7. How did printing technology impact literacy and educationSol.pdf
 
Question 1Theories of Law Subject__________ is a collaborative.pdf
Question 1Theories of Law Subject__________ is a collaborative.pdfQuestion 1Theories of Law Subject__________ is a collaborative.pdf
Question 1Theories of Law Subject__________ is a collaborative.pdf
 
Q Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdf
Q Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdfQ Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdf
Q Describe the 2 types of homologs. (1) Orthologs (2) ParalogsS.pdf
 
Please fix the java code (using eclipse)package hw4p1;import jav.pdf
Please fix the java code (using eclipse)package hw4p1;import jav.pdfPlease fix the java code (using eclipse)package hw4p1;import jav.pdf
Please fix the java code (using eclipse)package hw4p1;import jav.pdf
 
Overview You are tasked with writing a program called Social Security.pdf
Overview You are tasked with writing a program called Social Security.pdfOverview You are tasked with writing a program called Social Security.pdf
Overview You are tasked with writing a program called Social Security.pdf
 
A geneticist Dr. O. Sophila discovers a new mutation that causes the .pdf
A geneticist Dr. O. Sophila discovers a new mutation that causes the .pdfA geneticist Dr. O. Sophila discovers a new mutation that causes the .pdf
A geneticist Dr. O. Sophila discovers a new mutation that causes the .pdf
 
o Dfe the cefcien of hermal expansion. What is the relation between t.pdf
o Dfe the cefcien of hermal expansion. What is the relation between t.pdfo Dfe the cefcien of hermal expansion. What is the relation between t.pdf
o Dfe the cefcien of hermal expansion. What is the relation between t.pdf
 
Monohybrid crosses with incomplete dominance and co-dominance The red.pdf
Monohybrid crosses with incomplete dominance and co-dominance The red.pdfMonohybrid crosses with incomplete dominance and co-dominance The red.pdf
Monohybrid crosses with incomplete dominance and co-dominance The red.pdf
 
Match the tissues in column A with the characteristics in (Some answe.pdf
Match the tissues in column A with the characteristics in (Some answe.pdfMatch the tissues in column A with the characteristics in (Some answe.pdf
Match the tissues in column A with the characteristics in (Some answe.pdf
 
Jumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdf
Jumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdfJumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdf
Jumbo shrimp are those that require 10 to 15 shrimp to make a pound..pdf
 
In metaphase 1 of meiosis, the homologous chromosomes line up side by.pdf
In metaphase 1 of meiosis, the homologous chromosomes line up side by.pdfIn metaphase 1 of meiosis, the homologous chromosomes line up side by.pdf
In metaphase 1 of meiosis, the homologous chromosomes line up side by.pdf
 
Implement the sequence class from Section 3.2 of the textbook. The d.pdf
Implement the sequence class from Section 3.2 of the textbook. The d.pdfImplement the sequence class from Section 3.2 of the textbook. The d.pdf
Implement the sequence class from Section 3.2 of the textbook. The d.pdf
 
Gene frequencies for the ABO alleles vary geographically. For exa.pdf
Gene frequencies for the ABO alleles vary geographically. For exa.pdfGene frequencies for the ABO alleles vary geographically. For exa.pdf
Gene frequencies for the ABO alleles vary geographically. For exa.pdf
 
Explain the factors that determine the binding specificity between t.pdf
Explain the factors that determine the binding specificity between t.pdfExplain the factors that determine the binding specificity between t.pdf
Explain the factors that determine the binding specificity between t.pdf
 

Recently uploaded

South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
Academy of Science of South Africa
 
2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...
Sandy Millin
 
Best Digital Marketing Institute In NOIDA
Best Digital Marketing Institute In NOIDABest Digital Marketing Institute In NOIDA
Best Digital Marketing Institute In NOIDA
deeptiverma2406
 
A Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptxA Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptx
thanhdowork
 
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptxChapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Mohd Adib Abd Muin, Senior Lecturer at Universiti Utara Malaysia
 
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama UniversityNatural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Akanksha trivedi rama nursing college kanpur.
 
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental DesignDigital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
amberjdewit93
 
BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...
BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...
BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...
Nguyen Thanh Tu Collection
 
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
Levi Shapiro
 
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...
NelTorrente
 
MASS MEDIA STUDIES-835-CLASS XI Resource Material.pdf
MASS MEDIA STUDIES-835-CLASS XI Resource Material.pdfMASS MEDIA STUDIES-835-CLASS XI Resource Material.pdf
MASS MEDIA STUDIES-835-CLASS XI Resource Material.pdf
goswamiyash170123
 
Introduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp NetworkIntroduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp Network
TechSoup
 
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
MysoreMuleSoftMeetup
 
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdfUnit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Thiyagu K
 
The Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collectionThe Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collection
Israel Genealogy Research Association
 
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdfANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
Priyankaranawat4
 
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Executive Directors Chat  Leveraging AI for Diversity, Equity, and InclusionExecutive Directors Chat  Leveraging AI for Diversity, Equity, and Inclusion
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
TechSoup
 
Normal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of LabourNormal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of Labour
Wasim Ak
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
Delapenabediema
 
How to Add Chatter in the odoo 17 ERP Module
How to Add Chatter in the odoo 17 ERP ModuleHow to Add Chatter in the odoo 17 ERP Module
How to Add Chatter in the odoo 17 ERP Module
Celine George
 

Recently uploaded (20)

South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
 
2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...
 
Best Digital Marketing Institute In NOIDA
Best Digital Marketing Institute In NOIDABest Digital Marketing Institute In NOIDA
Best Digital Marketing Institute In NOIDA
 
A Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptxA Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptx
 
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptxChapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
 
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama UniversityNatural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
 
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental DesignDigital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
 
BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...
BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...
BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...
 
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
 
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...
 
MASS MEDIA STUDIES-835-CLASS XI Resource Material.pdf
MASS MEDIA STUDIES-835-CLASS XI Resource Material.pdfMASS MEDIA STUDIES-835-CLASS XI Resource Material.pdf
MASS MEDIA STUDIES-835-CLASS XI Resource Material.pdf
 
Introduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp NetworkIntroduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp Network
 
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
 
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdfUnit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdf
 
The Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collectionThe Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collection
 
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdfANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
 
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Executive Directors Chat  Leveraging AI for Diversity, Equity, and InclusionExecutive Directors Chat  Leveraging AI for Diversity, Equity, and Inclusion
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
 
Normal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of LabourNormal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of Labour
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
 
How to Add Chatter in the odoo 17 ERP Module
How to Add Chatter in the odoo 17 ERP ModuleHow to Add Chatter in the odoo 17 ERP Module
How to Add Chatter in the odoo 17 ERP Module
 

Who is D.L ShellSolutionHi friend,Donald L. Shell (March 1,.pdf

  • 1. Who is D.L Shell? Solution Hi friend, Donald L. Shell (March 1, 1924 – November 2, 2015) was an American computer scientist who designed the Shell sort sorting algorithm. He acquired his Ph.D. in Mathematics from the University of Cincinnati in 1959, and published the shell sort algorithm in the Communications of the ACM in July that same year. YOu can read on: https://en.wikipedia.org/wiki/Donald_Shell