Feedback-Free Circuits in the Algebra of Transients.

Mihaela Gheorghiu Janusz A. Brzozowski Feedback-Free Circuits in the Algebra of Transients. 106-116 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2608&spage=106 2002 conf/wia/2002 CIAA db/conf/wia/ciaa2002.html#GheorghiuB02