The document discusses the process of linking references and cited-by data through CrossRef, emphasizing the importance of outbound DOI links in references as a membership rule. It outlines methods for depositing references and retrieving cited-by data, including using XML and simple text query tools. Additionally, it addresses the differences in citation counts from various services and offers strategies for maintaining up-to-date cited-by information.

1. Reference linking
& Cited-by

2. `
linking out your references
is the opposite
of Cited By linking

3. • Members MUST add outbound Crossref DOI links to their
references
– This is a membership rule
Reference Linking

4. `

5. Getting back your matched references
https://doi.crossref.org/getResolvedRefs?doi=10.1103/PhysRevE.91.062714&usr=…

6. Crossref Simple Text Query
https://apps.crossref.org/simpleTextQuery
Slides reproduced courtesy of INASP

7. `
Cited-by
(what other journals reference or ‘cite’ your journal)

8. Title of
Presentation
Presenter
Presenter position
@twittername
Meeting/Conference title, Location, Date

11. Participation
1. Email member@crossref.org to sign-up
2. Deposit to Crossref reference lists each article’s metadata
3. Query Crossref for a list of all DOIs citing a document
4. Display Cited-by results on your website
No fee - Cited-by is an optional service

12. Question
• Why do different services show different numbers/citations?
• A: they are looking at different sets of journals, articles and
data
• Crossref will include things that other databases do not (and
vice-versa

13. Title of
Presentation
Presenter
Presenter position
@twittername
Meeting/Conference title, Location, Date
An XML deposit file
Depositing your references

14. `
Depositing your references
Three ways to include a reference in your XML
3) As text reference
<citation key="2697_CR10">
<unstructured_citation>British Standard. Chemical methods- Extraction of
trace elements soluble in aqua-regia. BS 7755-3.9: 1995 ISO 11466
1995</unstructured_citation>
</citation>
1) As structured data
<citation key="459_CR8">
<journal_title>Mon Weather Rev</journal_title>
<author>GJ Holland</author>
<volume>108</volume>
<first_page>1212</first_page>
<cYear>1980</cYear>
</citation>
2) As a DOI
<citation key="ref10">
<doi>10.1037/13484-000</doi>
</citation>

15. Deposit with Simple Text Query
https://apps.crossref.org/simpleTextQuery
Slides reproduced courtesy of INASP

16. Enter email
Paste references in here
Hit ‘submit’ to finish
Crossref Simple Text Query

17. Other?
• OJS are working with Crossref on a tool to help deposit
references
• We hope it will be available from OJS v3.2
• At the moment, you would need to use one of the methods
above or export from OJS and add your references into the
XML
• A full Cited-by plug in was available for earlier versions of
OJS. We hope to revive it soon.

18. `Three strategies for retrieving cited-by data
1) Periodically come and get the latest data, then update your pages
3) Come and get the data on the fly when a user has asked to see it
• In all cases you make HTTP requests to get the data
• In #1 and #2 you have to store the results
2) For each DOI come and get the data once, and enable alerts

19. `
Periodically get the data
http://doi.crossref.org/servlet/getForwardLinks?usr=<username>
&pwd=<password>&doi=<doi>
&startDate=<startDate>&endDate=<endDate>&date=<single
day>
• The DOI would be just a prefix, in which case ‘date’ must be provided
• These requests can return VERY large responses
Example:
http://doi.crossref.org/servlet/getForwardLinks?
Usr=***&pwd=***&doi=10.1067&date=2011-05-10

20. `

21. `
Periodically get the data
http://oai.crossref.org/OAIHandler?verb=ListRecords&usr=<usernam
e>&pwd=<password>
&set=J:<prefix>:<journalID>
&from=YYYY-MM-DD&until=YYYY-MM-DD
&metadataPrefix=cr_citedby
• These requests can return VERY large responses
Example:
http://oai.crossref.org/OAIHandler?verb=ListRecords&usr=bioone&pwd=****
&set=J:10.2981:60810&metadataPrefix=cr_citedby

22. `

23. `
Get the data once, and enable alerts
<?xml version = "1.0" encoding="UTF-8"?>
…
<body>
<fl_query alert="true">
<doi>10.1053/sonc.2002.35642</doi>
</fl_query>
</body>
</query_batch>

24. `Get the data on the fly
http://doi.crossref.org/servlet/getForwardLinks?usr
=<username>&pwd=<password>&doi=<doi>
http://doi.crossref.org/servlet/getForwardLinks?
Usr=***&pwd=***&doi=10.1067/mcp.2001.115446
Example:

25. `

26. Figuring out who has cited your
content can be difficult; Cited-by
provides a way to find these
citations and display the results.

27. Questions?