Yet Another Characterization of Strong Equivalence

@InProceedings{bochman_et_al:LIPIcs.ICLP.2011.11,
  author =	{Bochman, Alexander and Lifschitz, Vladimir},
  title =	{{Yet Another Characterization of Strong Equivalence}},
  booktitle =	{Technical Communications of the 27th International Conference on Logic Programming (ICLP'11)},
  pages =	{11--15},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-31-6},
  ISSN =	{1868-8969},
  year =	{2011},
  volume =	{11},
  editor =	{Gallagher, John P. and Gelfond, Michael},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICLP.2011.11},
  URN =		{urn:nbn:de:0030-drops-31674},
  doi =		{10.4230/LIPIcs.ICLP.2011.11},
  annote =	{Keywords: Strong equivalence, logic program}
}