@article{Nicolas_Garcia_Stephan_Lefevre_AMAI_06,
  author = "P. Nicolas and L. Garcia and I. St{\'e}phan and C. Lef{\`e}vre",
  title = "{P}ossibilistic {U}ncertainty {H}andling for {A}nswer {S}et {P}rogramming",
    journal = "Annals of Mathematics and Artificial Intelligence",
volume = "47(1-2)",
pages = "139-181",
    year = "2006"
}