M. Rodriguez, J. Bollen, and H. de Sompel. JCDL '07: Proceedings of the 2007 conference on Digital libraries, page 278--287. New York, NY, USA, ACM Press, (2007)
M. Rodriguez, J. Bollen, and H. de Sompel. JCDL '07: Proceedings of the 2007 conference on Digital libraries, page 278--287. New York, NY, USA, ACM, (2007)