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1. CrossRef Technical Basics Chuck Koscher, Director of Technology

4. Flow of transactions Joins CrossRef and receives prefix 10.1234 Designs suffix scheme Publishes Article A Build XML for deposit Sends XML to CrossRef Extract references From the article Query CrossRef to get DOIs for the bibliography Build links into on-line article A (link out) Construct an appropriate landing page Deposit Query Query CrossRef to get DOIs for cited-by article A Query Build ‘who cites this article list into on-line article A (link out) Receive a cited-by alert for article A email Update ‘who cites this article list into on-line article A (link out)

5. <?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?> … <timestamp>200706181120</timestamp> … <journal> <journal_metadata> <full_title>Test Publication</full_title> <abbrev_title>T27P</abbrev_title> <issn media_type='print'>99999999</issn> </journal_metadata> <journal_issue> <publication_date media_type='print'> <month>5</month> <day>5</day> <year>2001</year> </publication_date> <journal_volume> <volume>33</volume> </journal_volume> <issue>1</issue> </journal_issue> <journal_article publication_type='full_text'> <titles> <title>Article Apr 16, 2007 11:51</title></titles> <contributors> <person_name sequence='first' contributor_role='author'> <given_name>Chuck</given_name> <surname>Koscher</surname> </person_name> <publication_date media_type='print'> <month>5</month> <day>9</day> <year>1995</year> </publication_date> <pages> <first_page>100</first_page><last_page>200</last_page> </pages> <doi_data> <doi>10.50505/test_200704082300</doi> <resource>http://www.crossref.org/</resource> </doi_data> <component_list> <component parent_relation=&quot;isPartOf&quot;> <description>Some component DOI</description> <doi_data> <doi>10.50505/test_200611161118</doi> <resource>http://www.crossref.org/</resource> </doi_data> </component> </component_list> 1 2 3 4 CrossRef XML

6. Deposit a list of references in an article - Its just some additional XML <citation_list> <citation key=&quot;10.1002/sat.744-BIB1&quot;> <journal_title>Microwave Journal</journal_title> <author>Steyskal</author> <volume>30</volume> <first_page>107</first_page> <cYear>1987</cYear> </citation> <citation key=&quot;10.1002/sat.744-BIB2“> <volume_title>Wideband CDMA for Third Generation Mobile Communications</volume_title> <author>Ojanperä</author> <cYear>1998</cYear> <unstructured_citation>(eds). Wideband CDMA for Third Generation Mo…. </unstructured_citation> </citation> <citation key=&quot;10.1002/sat.744-BIB3&quot;> <journal_title>IEEE Transactions on Acoustics, Speech, and Signal Processing</journal_title> <author>Treichler</author> <volume>31</volume> <first_page>459</first_page> <cYear>1983</cYear> </citation> <citation key=&quot;10.1002/sat.744-BIB4&quot;> <volume_title>Signal Detection in Non Gaussian Noise</volume_title> <author>Kassam</author> <cYear>1988</cYear> <unstructured_citation>Signal Detection in Non Gaussian Noise. Springer: New York, 1… </citation> </citation_list>

8. How do I send in this XML? - Use the upload form at http://doi.crossref.org

10. What if I don’t program and don’t know XML? - Use http://www.crossref.org/webDeposit/

14. What if I have articles in NLM based XML? - Use http://www.crossref.org/webDeposit/

16. People view: Obtain a DOI when you have the metadata - Use the guest query form at http://www.crossref.org/guestquery

17. People view: Query for a DOI when you have the metadata - Use a form at http://doi.crossref.org Piped query XML query

19. People view: Obtain a DOI when you have the metadata (OpenURL) http://www.crossref.org/openurl ? aulast=Maas+LRM &title=JOURNAL+OF+PHYSICAL+OCEANOGRAPHY &volume=32 &issue=3 &spage=870 &date=2002 &pid=username:password

23. People view: Query to obtain metadata using a DOI - Use the form at http://doi.crossref.org

25. People view: Query to obtain metadata using a DOI

27. People view: Obtain a DOI when you have the reference text If you are the publisher, submit these as references!

28. Machine view: Obtain a DOI when you have the reference text None (not yet anyway)

30. <forward_link doi=&quot;10.1097/00001622-200101000-00005&quot;> <journal_cite> <issn>12345678</issn> <journal_title>Test Publication</journal_title> <article_title>Article Mar 2, 2004 10:38</article_title> <first_page>S125</first_page> <year>1999</year> <publication_type>full_text</publication_type> <doi>10.5555/small_md_0001</doi> </journal_cite> <msg>Forward linking query alerts enabled in CrossRef</msg> </forward_link> <forward_link doi=&quot;10.1097/00001622-200101000-00005&quot;> <journal_cite> <issn>12345678</issn> <journal_title>Test Publication</journal_title> <article_title>Article Mar 2, 2004 10:38</article_title> <contributors> <contributor first-author=&quot;true&quot;> <given_name>Tom</given_name> <surname>Jo nes</surname> </contributor> </contributors> <volume>12</volume> <issue>1&#233;</issue> <first_page>S125</first_page> <year>1999</year> <publication_type>full_text</publication_type> <doi>10.5555/char_test_001</doi> </journal_cite> <msg>Forward linking query alerts enabled in CrossRef</msg> </forward_link> </body> </query_result> </crossref_result>

33. www.crossref.org/help