@article{DelgrandeGharibMerceretal.2003,
  author    = {James Patrick Delgrande and Mona Gharib and Robert E. Mercer and V. Risch and Torsten H. Schaub},
  title     = {Lukaszewicz-style answer set programming : a preliminary report},
  url       = {http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-78/},
  year      = {2003},
}