Knowledge Processing and Information Systems Backdoors to tractable answer set programming
@article{DBLP:journals/ai/FichteS15,
title = {Backdoors to tractable answer set programming},
author = {Fichte, Johannes Klaus and Szeider, Stefan},
journal = {Artif. Intell.},
pages = {64--103},
volume = {220},
year = {2015}
}