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Author Rights and Permissions Frequently Asked Questions

1. When I give PNAS an exclusive license to publish my article, what rights do I have?

Please visit our Licenses page for information about author rights under the PNAS exclusive and nonexclusive licenses.

2. How do I obtain a PNAS License to Publish form?

Please visit our Licenses page for more information.

3. What if I am not the only author?

If practical, all coauthors should sign the PNAS License to Publish. If not, the corresponding author must secure the permission of all coauthors to act on their behalf, and sign the form.

4. What happens if PNAS does not publish my article?

If the paper is not published in PNAS, the license to publish is terminated and all rights revert to the author(s).

5. May I sign the PNAS License to Publish if I am employed by the US government?

Yes. The corresponding author may sign on behalf of all authors in the standard section of the License to Publish, if only some authors are US government employees. However, if all authors are US government employees, the corresponding author must sign the "All authors are US government employees" section only. Please note, employees of national laboratories, e.g., Brookhaven National Laboratory, are not US government employees, and should sign in the standard section. For questions, please contact PNASAuthorLicense{at}nas.edu.

6. How do I obtain permission to use previously published material in my article?

Before submitting your paper to PNAS, please use our sample letter to ask a third-party owner of copyright for their written permission to use, in print and electronic format, any previously published text, illustrations, graphics, or other material.

7. Can I post my work on a preprint server?

Yes, please review our policy on preprint servers. The PNAS Media Office asks that authors refrain from posting accepted manuscripts on publicly accessible preprint servers until after the media embargo has expired.

Posting a preprint of your article does not constitute prior publication and does not preclude publication in PNAS. You do not need to remove preprints of your manuscript from publicly available servers (including your personal web pages) after your article has been accepted for publication in PNAS. Any posting made after acceptance of the article for publication in PNAS must include a link to the article in PNAS Online.

8. How do I obtain a PDF of my article?

For articles that are not published open access, you may download the PDF from the PNAS website if your institution has a site license or if you have a personal subscription, or, you may purchase a copy via pay per view. Unfortunately, we cannot provide individual PDFs to authors. For assistance, please contact PNASpermissions{at}nas.edu.

9. How can I show my article to my colleagues?

For proper versioning and for article usage metrics, we prefer that you send colleagues a link to your article at PNAS Online. PNAS does not allow articles to be systematically distributed as PDFs by email, posted on listservs, or placed in open archives. Please remember that PNAS retains an exclusive license for the presentation of the article (i.e., the typographical layout as a PDF and the links and features of the HTML full text version).

10. Can others (nonauthor third parties) use my original figures or tables in their works without asking PNAS for permission?

PNAS automatically permits others to use original figures or tables published in PNAS for noncommercial and educational use (i.e., in a review article, in a book that is not for sale), provided that the full journal reference is cited and, for articles published in volumes 90–105 (1993–2008), "Copyright (copyright year) National Academy of Sciences." Commercial reuse of figures and tables (i.e., in promotional materials, in a textbook for sale) requires permission from PNAS. Please see PNAS Rights and Permissions.

11. Can the news media use my figures without asking PNAS for permission?

Yes, journalists may use original figures from your PNAS article to illustrate news stories. Written permission from PNAS is not required; however, all figures must be cited as reproduced with permission from Proceedings of the National Academy of Sciences USA. Figures may not be used to illustrate news stories unrelated to a given PNAS article without express written permission from PNAS. To obtain high-resolution versions of figures, contact the PNASnews{at}nas.edu.

12. Where do I send requests for permission that I receive from others?

Please see PNAS Rights and Permissions. Permission requests may be sent to PNASpermissions{at}nas.edu.

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