@article{SPDL-JAR,
  author    = {Barbara Dunin-Keplicz and
               Linh Anh Nguyen and
               Andrzej Szalas},
  title     = {Tractable approximate knowledge fusion using the {Horn} fragment
               of serial propositional dynamic logic},
  journal   = {Int. J. Approx. Reasoning},
  volume    = {51},
  number    = {3},
  year      = {2010},
  pages     = {346-362}
}