BersonL87'

@inproceedings{DBLP:conf/sp/BersonL87,
  author    = {Thomas A. Berson and
               Teresa F. Lunt},
  title     = {Multilevel Security for Knowledge-Based Systems},
  booktitle = {IEEE Symposium on Security and Privacy},
  year      = {1987},
  pages     = {235-242},
  crossref  = {DBLP:conf/sp/1987},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sp/1987,
  title     = {Proceedings of the 1987 IEEE Symposium on Security and Privacy,
               Oakland, California, USA, April 27-29, 1987},
  booktitle = {IEEE Symposium on Security and Privacy},
  publisher = {IEEE Computer Society},
  year      = {1987},
  isbn      = {0-8186-0771-8},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}