%0 Journal Article %T Proving the Decidability of the PDLxPDL Product Logic %A L. Aszalos %A P. Balbiani %J Studia Universitatis Babes-Bolyai : Series Informatica %D 2009 %I Babes-Bolyai University, Cluj-Napoca %U http://www.cs.ubbcluj.ro/~studia-i/2009-1/01-Aszalos.pdf