PNAS allows authors to keep copyright

Beginning with papers submitted in January 2009, PNAS authors will retain copyright to their work and will give the National Academy of Sciences an exclusive license to publish it. PNAS copyright policy has evolved over the years, and this change is the next logical step in providing reasonable, flexible rights that balance the interests of authors, readers, and the publisher. Before 1993, authors

[mobanama]

"Beginning with papers submitted in January 2009, PNAS authors will retain copyright to their work and will give the National Academy of Sciences an exclusive license to publish it""Before 1993, authors held copyright to their papers and PNAS registered copyright only to the collective work"へぇ

[copyright]

自宅からだとフルテキストにアクセスできない。orz