7Wu M M. Building a collaborative digital collection: A necessary evolution in libraries [J]. Law Library Journal, 2011, 103(4) : 527 -551.
8Demas S, Miller M E. Rethinking collection management plans: Shaping collective collections for the 21stcentury[J]. Collective Management, 2012, 37 (3/4) : 168 - 187.
9Urquhart C J, Cox A M, Spink S. Collaboration on procurement of e-content between the National Health Service and higher education in the UK[ J]. Intcrlending & Document Supply, 2007, 35 (7) : 164 - 170.
10Ball D. Public libraries and the consortium purchase of electronic resources[ J]. The Electronic Library,2003, 21 (4) : 301 - 309.