Rajeev Goré Florian Widmann An Optimal On-the-Fly Tableau-Based Decision Procedure for PDL-Satisfiability. 437-452 2009 CADE http://dx.doi.org/10.1007/978-3-642-02959-2_32 conf/cade/2009 db/conf/cade/cade2009.html#GoreW09