@inproceedings{DBLP:conf/dagstuhl/Makinson07,
  author    = {David Makinson},
  title     = {Propositional Relevance through Letter-Sharing: Review and
               Contribution},
  booktitle = {Formal Models of Belief Change in Rational Agents},
  year      = {2007},
  ee        = {http://drops.dagstuhl.de/opus/volltexte/2007/1212},
  crossref  = {DBLP:conf/dagstuhl/2007P7351},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/dagstuhl/2007P7351,
  editor    = {Giacomo Bonanno and
               James P. Delgrande and
               J{\'e}r{\^o}me Lang and
               Hans Rott},
  title     = {Formal Models of Belief Change in Rational Agents, 26.08.
               - 30.08.2007},
  booktitle = {Formal Models of Belief Change in Rational Agents},
  publisher = {Internationales Begegnungs- und Forschungszentrum fuer Informatik
               (IBFI), Schloss Dagstuhl, Germany},
  series    = {Dagstuhl Seminar Proceedings},
  volume    = {07351},
  year      = {2007},
  ee        = {http://drops.dagstuhl.de/portals/07351/},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}