@inproceedings{DBLP:conf/ecsqaru/DelgrandeS01,
title = {How to Reason Credulously and Skeptically within a Single Extension},
author = {Delgrande, James P. and Schaub, Torsten},
booktitle = {{ECSQARU}},
pages = {592--603},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
volume = {2143},
year = {2001}
}