@article{OJ08:tplp,
author = {Emilia Oikarinen and Tomi Janhunen},
journal = {Theory and Practice of Logic Programming},
month = {November},
number = {5-6},
pages = {717--761},
title = {Achieving Compositionality of the Stable Model Semantics for smodels Programs},
volume = {8},
year = {2008},
}