@inproceedings{
    NSS99:lpnmr,
    author = {Niemel{\"a}, Ilkka and Simons, Patrik and Soininen, Timo},
    publisher = "Springer-Verlag",
    title = "Stable Model Semantics of Weight Constraint Rules",
    booktitle = "Proceedings of the 5th International Conference on Logic Programming and Nonmonotonic Reasoning",
    address = "El Paso, Texas, USA",
    month = "December",
    note = "",
    year = "1999",
    organization = "",
    pages = "317--331"
}