Carol Anne Meyer's quiz on all things CrossRef presented at the 2013 CSE Meeting in Montreal.

1. So you think you know CrossRef?
Carol Anne Meyer
Marketing and Business Development
Twitter: @meyercarol
Council of Science Editors
CrossRef, CrossCheck, and CrossMark
5 May 2013

2. What was the first service
CrossRef offered?
a. CrossRef Search
b. DOI Reference Linking
c. CrossMark
d. CrossCheck
b.

3. CrossRef was founded in 2000 by a group of scholarly
publishers for the purpose of establishing a reference linking
system using the DOI.

4. What does DOI stand for?
a. Digital Object Identifier
b.Dancing on Ice
c.US Department of the Interior
d.Malta Department of Information
e.California Department of Insurance
f. None of the above
g. All of the above
g.

5. http://www.doi.org/

6. DOI is a trademark of the
International DOI Foundation
that appoints registration
agencies like CrossRef
www.doi.org

7. What types of content have DOIs?
a. Consumer Movies
b.Scholarly Articles in Italian
c.Scholarly Articles in Chinese
d.Reference Works
e.Excel Spreadsheets
f. None of the Above
g. All of the Above
g.

8. Current Registration
agencies

10. Which type of organization was
not originally eligible to participate
in CrossRef?
a. Commercial Publishers
b. Society Publishers
c. International Publishers
d. Secondary Publishers
d.

11. CrossRef was founded by a diverse group of publishers:
commercial companies, not-for-profit societies, and
publishers from North American, the UK, and Europe.
Abstracting and Indexing publishers, though, not eligible for
membership, quickly became able to participate as Affiliates.

12. – Can query the system for DOIs and metadata
– Can get bulk updates of metadata
– Can act on behalf of members
83 Non-Publisher Affiliates

13. What do academic & research
libraries have to do with CrossRef?
a. They send metadata queries to discover DOIs
b. They use CrossRef metadata to direct their users to the
licensed copy of an article
c. They assign DOIs to scholarly documents hosted in
institutional repositories
d. They educate students on reference skills including
using DOIs in academic papers
e. All of the above
f. None of the above
e.

14. CrossRef has 2000 Library Affiliates
• Library Affiliates do substantial volume of querying at
CrossRef
• Link Resolvers supplement library user metadata with
CrossRef metadata and/or DOIs. The link resolver looks up
institution’s holdings to direct users to a licensed copy.
• Libraries join CrossRef as Publisher Members to assign
DOIs to content.

15. Works with Publishers, Libraries, and others

16. What is Forward Linking?
a. A way to tell which of your article references will have
content to link to in the future
b. The strategic planning process at CrossRef
c. Another name for CrossRef Cited-By Linking
d. All of the above
e. None of the Above
C.

17. Cited-by Linking
• Forward Linking was the original name for Cited-By
Linking, because links would be created to the article (not
from the article) after subsequent articles cited it.
• Forward Linking should not be confused with Stored
Queries, which save unmatched queries at the time of
production and alert the publisher when DOIs are
assigned to the non-matched references.
b.

18. 343 million Cited-By links
25 million CrossRef DOIs with Cited-By
links
19 million documents with references

20. CrossRef Services for
Publishers
• DOI Reference
Linking
• Cited-By Linking
• CrossCheck
Plagiarism
Screening
• CrossMark
• FundRef

21. What is the recommended format
for displaying CrossRef DOIs?
a. 10.5703/1288284314959
b. DOI: 10.5703/1288284314959
c. doi: 10.5703/1288284314959
d. Doi: 10.5703/1288284314959
e. doi: 10.5703/1288284314959
f. http://dx.doi.org/10.5703/12882843l4959
g. All of the above
h. None of the above
f.

22. • DOIs should be displayed as URIs (aka URLs)
so they are not only unique, but also
actionable.
• Displaying DOIs as URLs allows machines to
follow DOIs, allows humans to use browser
tools such as open in a new window, copy,
etc.
• And, it makes it clear to readers what they
should do with them—Click!

23. Which of the following is an
acceptable format for displaying
CrossRef DOIs?
a. http://dx.doi.org/10.5703/1288284314959
b. http://dx.doi.org/10.12932/AP0268.31.2.2013
c. http://doi.org/jhc
d. All of the above
e. None of the above
d.

24. • DOIs should be displayed as URIs (aka URLs) so they
are not only unique but they resolve.
• Unwieldy DOIs can be shortened at shortdoi.org. Or
better yet, choose a short naming scheme.
• CrossRef has exhausted all the “10.” prefixes with 6
digits and earlier this year began assigning 7 digit
prefixes.
http://shortdoi.org

25. http://www.crossref.org/02publishers/doi_display_guidelines.html

26. Take a look at the following page

28. What’s missing that causes it to be out
of compliance with CrossRef’s rules?
a. Funding information
b.CrossMark logo
c.DOI
d.CrossRef member logo
c.

29. • Publisher response pages must include
the DOI, ideally in URL format, even
though the link resolves to the same
page.
• Displaying the CrossRef Member logo is
a best practice, but not required.
• CrossMark is an optional service of
CrossRef, so the logo is not required for
non-participating publishers
• Funding disclosures are good practice,
but not required by CrossRef

30. http://www.crossref.org/06members/49logos.html

31. When did CrossRef start allowing
publishers to assign DOIs to scholarly
books?
a. 2000
b.2005
c.2010
d.Never, CrossRef doesn’t support book DOIs
e.None of the above
b

32. Not just journals!

33. Choose the answer that best describes
CrossRef
a. A not-for-profit trade association
b.A commercial vendor to scholarly publishers
c. A collaboration of subscription publishers
d. A subsidiary of a large commercial publisher
e.None of the above
a.

34. is a not-for-profit association of worldwide
scholarly publishers

35. CrossRef is not-for-profit
http://www.crossref.org/02publishers/20pub_fees.html#deposit
• Organized as a trade association in New York
• Financially independent
• Members include publishers with both open
access and subscription models
• Governed by a volunteer board of directors
elected by members,

37. What is the fastest growing content type
at CrossRef?
a. Journals
b.Books
c.Standards
d.Data
e.Reports
b.

38. Books are growing the fastest:
over 365,000 titles

40. How can my publication cite supplementary
data and other material?
a. Assign a DOI at CrossRef
b. Cite the data in the reference section using the
DataCite or CrossRef DOI
c. Host the data at my organization
d. Have the author host the data at his or her institution
e. All of the above
f. None of the above

41. If I have supplementary data, I need to
join DataCite to assign DOIs
a. True
b.False
b.

42. • CrossRef has been assigning DOIs to components,
including data sets, figures, tables, and graphics
since 2007.
• The difference between different DOI registration
agencies is one of community, not content type.
• CrossRef assigns DOIs for the scholarly publishing
community. DataCite works with the library
community and institutional repositories.

43. More than 1 million data
items/figures/components
have CrossRef DOIs
• Protein Data Bank
• Inter-university Consortium for Political and
Social Research (ICPSR)
• International Union of Crystallography (IUCR)
• Organization for Economic Development
(OECD)
• Public Library of Science (PLoS)

44. How much does a DOI cost at CrossRef?
a. $1
b. 25¢
c. 15¢
d. .06¢
e. All of the above
f. None of the above

45. CrossRef doesn’t sell DOIs
It provides services around DOIs like reference
linking, plagiarism screening, discoverability,
metadata distribution, update indicators, funding
metadata.

46. Deposit fees for different content types:
http://www.crossref.org/02publishers/20pub_fees.html#deposit

47. CrossRef 60 million
ORCID 130 thousand
PubMed 23 million
SCOPUS 49 million
Web of Science 50 Million
Match the Number of Records
with the Organization
CrossRef 130 thousand
ORCID 23 million
PubMed 49 million
SCOPUS 50 Million
Web of Science 60 million

48. How many times per month does someone click
on or resolve a CrossRef DOI?
a. 5 million
b.10 million
c.100 million
d.1 trillion

49. 91,236,652

50. In Summary
• CrossRef provides infrastructure to enable
publishers to enhance their content and
services
• CrossRef services drive traffic to
publishers content

51. What’s in it for
publishers?
• No publisher is an island - collaboration and
connection is the key

52. Photo by Joi Ito

53. P.S. Open Access
Indicators
• Article level OA indicators will support
discovery of OA content in hybrid
journals.
• They can be displayed in CrossMark

54. Carol Anne Meyer
cmeyer@crossref.org
Twitter: @meyercarol
Thank You!