National Academy of Sciences

Preprint: archiving allowed.

Postprint: archiving allowed.

Published version: archiving allowed.


  • Author's pre-print and Author's post-print on author's personal website, institutional repository, arXiv or preprint servers only
  • Publisher copyright must be acknowledged
  • Must link to publisher version
  • Publisher's version/PDF may be used on author's personal website only
  • Publisher's version/PDF cannot be used in a repository
  • Authors may have deposit in funding body's archive or funding body's designated repository for public release 6 months after publication or immediately upon payment of fee
  • All PNAS-formatted versions are deposited in PubMed Central for release after 6 months, regardless of funding
  • Applies to PNAS only
  • Policy last reviewed on 01/08/2014

Policy details