db/conf/dl/DunnM99.html Jon W. Dunn Constance A. Mayer VARIATIONS: A Digital Music Library System at Indiana University. 12-19 DL/1999/P012.pdf 1999 conf/dl/1999 ACM DL http://doi.acm.org/10.1145/313238.313242 db/conf/dl/dl99.html#DunnM99