@inproceedings{DBLP:conf/lpnmr/DelgrandeST07, title = {A Preference-Based Framework for Updating Logic Programs}, author = {Delgrande, James P. and Schaub, Torsten and Tompits, Hans}, booktitle = {{LPNMR}}, pages = {71--83}, publisher = {Springer}, series = {Lecture Notes in Computer Science}, volume = {4483}, year = {2007} }