Jian Zhang Hantao Zhang Extending Finite Model Searching with Congruence Closure Computation. 94-102 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3249&spage=94 2004 conf/aisc/2004 AISC db/conf/aisc/aisc2004.html#ZhangZ04