Moritz Hammer Alexander Knapp Stephan Merz Truly On-the-Fly LTL Model Checking. 191-205 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3440&spage=191 2005 conf/tacas/2005 TACAS db/conf/tacas/tacas2005.html#HammerKM05