Harald Ganzinger Jürgen Stuber Superposition with Equivalence Reasoning and Delayed Clause Normal Form Transformation. 335-349 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2741&spage=335 2003 conf/cade/2003 CADE db/conf/cade/cade2003.html#GanzingerS03