@proceedings{DBLP:conf/pods/90,
  editor    = {Daniel J. Rosenkrantz and
               Yehoshua Sagiv},
  title     = {Proceedings of the Ninth ACM SIGACT-SIGMOD-SIGART Symposium
               on Principles of Database Systems, April 2-4, 1990, Nashville,
               Tennessee, USA},
  publisher = {ACM Press},
  year      = {1990},
  isbn      = {0-89791-352-3},
  ee        = {http://dl.acm.org/citation.cfm?id=298514},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}