Regimantas Pliuskevicius On an <i>omega</i>-Decidable Deductive Procedure for Non-Horn Sequents of a Restricted FTL. 523-537 http://link.springer.de/link/service/series/0558/bibs/1861/18610523.htm 2000 conf/cl/2000 Computational Logic db/conf/cl/cl2000.html#Pliuskevicius00