@InProceedings{Loyer02b,
author =       "Loyer, Yann and Straccia, Umberto",
title =        "The Well-founded Semantics in Normal Logic Programs with Uncertainty",  
booktitle =    FLOPS-2002,
publisher =    SV,
series =       LNCS,
number =       "2441",
pages  = "152-166",
address ="Aizu, Japan",
year	="2002"
}