Thomas Eiter, Michael Fink, Stefan Woltran. Semantical characterizations and complexity of equivalences in answer set programming. ACM Trans. Comput. Log., 8(3):17, 2007. [doi]
@article{EiterFW07,
title = {Semantical characterizations and complexity of equivalences in answer set programming},
author = {Thomas Eiter and Michael Fink and Stefan Woltran},
year = {2007},
doi = {10.1145/1243996.1244000},
url = {http://doi.acm.org/10.1145/1243996.1244000},
tags = {programming},
researchr = {https://researchr.org/publication/EiterFW07},
cites = {0},
citedby = {0},
journal = {ACM Trans. Comput. Log.},
volume = {8},
number = {3},
pages = {17},
}