@inproceedings{DBLP:conf/ipmu/AngerR90,
  author    = {Frank D. Anger and
               Rita V. Rodr\'{\i}guez},
  title     = {Time, Tense and Relativity Revisited},
  booktitle = {IPMU},
  year      = {1990},
  pages     = {286-295},
  ee        = {http://dx.doi.org/10.1007/BFb0028115},
  crossref  = {DBLP:conf/ipmu/1990},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/ipmu/1990,
  editor    = {Bernadette Bouchon-Meunier and
               Ronald R. Yager and
               Lotfi A. Zadeh},
  title     = {Uncertainty in Knowledge Bases, 3rd International Conference
               on Information Processing and Management of Uncertainty
               in Knowledge-Based Systems, IPMU '90, Paris, France, July
               2-6, 1990, Proceedings},
  booktitle = {IPMU},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {521},
  year      = {1991},
  isbn      = {3-540-54346-5},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}