@Proceedings{     dixlei04,
  title     = {Logic and {M}ulti-{A}gent {S}ystems, {P}ost {C}onference
               {P}roceedings of({CLIMA IV})},
  year      = {2004},
  editor    = {J.~Dix and J. Leite},
  publisher = {Springer},
  address   = {Berlin},
  series    = {LNCS},
  number    = {}
}