http://www.arl.org/sparc/ http://www.plos.org/support/instmembers/northamerica.html http://lockss.stanford.edu/related/related.htm http://repository.upenn.edu http://www.library.upenn.edu/scholcomm/sc_feedback.html http://www.hss.caltech.edu/~mcafee/Journal/OpenLetter.pdf http://www.library.upenn.edu/scholcomm/stickershock-window.html