Linn Marks Collins Mark L. B. Martinez Ketan K. Mane James E. Powell Chad M. Kieffer Tiago Simas Susan K. Heckethorn Kathryn R. Varjabedian Miriam Blake Richard Luce 31-33 2007 7 Int. J. on Digital Libraries 1-2 http://dx.doi.org/10.1007/s00799-007-0020-y db/journals/jodl/jodl7.html#CollinsMMPKSHVBL07