@Article{DBLP:journals/japll/BoellaGHRRT11,
  Title                    = {Time and defeasibility in FIPA ACL semantics},
  Author                   = {Guido Boella and
 Guido Governatori and
 Joris Hulstijn and
 R{\'e}gis Riveret and
 Antonino Rotolo and
 Leendert van der Torre},
  Journal                  = {J. Applied Logic},
  Year                     = {2011},
  Number                   = {4},
  Pages                    = {274-288},
  Volume                   = {9},

  Bibsource                = {DBLP, http://dblp.uni-trier.de},
  Ee                       = {http://dx.doi.org/10.1016/j.jal.2011.09.006},
  Url                      = {http://icr.uni.lu/leonvandertorre/papers/timeanddefeasibility.pdf}
}