9Harnad S, Brody T, Vallieres F, et al. The access/impact problem and the green and gold roads to open access. Serials Review,2004,30(4):310-314.
10Swan A. Open access self-archiving: An introduction.[2006-04-13 ].http:l lwww.ke yperspectiv es.co.uklopenaccessarchivelreports/Open%20access%20self-archiving%20-%20an%20introduction.pdf.