Manfred Droste, Vitaly Perevoshchikov. A Logical Characterization of Timed Pushdown Languages. In Lev D. Beklemishev, Daniil V. Musatov, editors, Computer Science - Theory and Applications - 10th International Computer Science Symposium in Russia, CSR 2015, Listvyanka, Russia, July 13-17, 2015, Proceedings. Volume 9139 of Lecture Notes in Computer Science, pages 189-203, Springer, 2015. [doi]
Abstract is missing.