* 1. Which field best describes your research area or profession?

* 2. How frequently do you read or browse journal articles online?

* 3. How often do you click on hyperlinked citations in your online research and reading?

* 4. Please give us your opinion of the usefulness of hyperlinked citations:

* 5. Do you know what a Digital Object Identifier (DOI) is?

* 6. Have you heard of the organization called CrossRef that enables citation linking among scholarly/scientific works using Digital Object Identifiers (DOIs)?

* 7. Do you encounter DOIs in your online research?

* 8. Where have you come across DOIs? (click all that apply)

* 9. Have you ever knowingly clicked on a DOI link?

* 10. How would you describe your experience clicking on DOIs?

* 11. What other types of hyperlinked citations have you used? (click all that apply)

* 12. Please select a phrase below to complete this sentence: "I would consider it _______________ to learn more about CrossRef and the DOI."

* Please use the space here to provide comments on DOIs and/or CrossRef (optional):

Thank you for your time and input. If you would like additional information about CrossRef, please visit www.crossref.org.