@inproceedings{DBLP:conf/aimsa/BenhammadiNS98, author = {Benhammadi, Farid and Nicolas, Pascal and Schaub, Torsten}, title = {Extension Calculus and Query Answering in Prioritized Default Logic}, booktitle = {{AIMSA}}, series = {Lecture Notes in Computer Science}, volume = {1480}, pages = {76--87}, publisher = {Springer}, year = {1998} }