@inproceedings{DBLP:conf/stoc/HalpernV86,
  author    = {Joseph Y. Halpern and
               Moshe Y. Vardi},
  title     = {The Complexity of Reasoning about Knowledge and Time: Extended
               Abstract},
  booktitle = {STOC},
  year      = {1986},
  pages     = {304-315},
  ee        = {http://doi.acm.org/10.1145/12130.12161},
  crossref  = {DBLP:conf/stoc/STOC18},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/stoc/STOC18,
  editor    = {Juris Hartmanis},
  title     = {Proceedings of the 18th Annual ACM Symposium on Theory of
               Computing, May 28-30, 1986, Berkeley, California, USA},
  booktitle = {STOC},
  publisher = {ACM},
  year      = {1986},
  isbn      = {0-89791-193-8},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}