Mikolaj Bojanczyk, Igor Walukiewicz. Characterizing EF and EX Tree Logics. In Philippa Gardner, Nobuko Yoshida, editors, CONCUR 2004 - Concurrency Theory, 15th International Conference, London, UK, August 31 - September 3, 2004, Proceedings. Volume 3170 of Lecture Notes in Computer Science, pages 131-145, Springer, 2004. [doi]
Abstract is missing.