@inproceedings{DBLP:conf/aaai/Ladkin86a,
  author    = {Peter B. Ladkin},
  title     = {Time Representation: A Taxonomy of Internal Relations},
  booktitle = {AAAI},
  year      = {1986},
  pages     = {360-366},
  ee        = {http://www.aaai.org/Library/AAAI/1986/aaai86-060.php},
  crossref  = {DBLP:conf/aaai/1986-1},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/aaai/1986-1,
  editor    = {Tom Kehler},
  title     = {Proceedings of the 5th National Conference on Artificial
               Intelligence. Philadelphia, PA, August 11-15, 1986. Volume
               1: Science},
  booktitle = {AAAI},
  publisher = {Morgan Kaufmann},
  year      = {1986},
  ee        = {http://www.aaai.org/Conferences/AAAI/aaai86.php},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}