Stepan Holub, Dirk Nowotka. The Ehrenfeucht-Silberger Problem. In Susanne Albers, Alberto Marchetti-Spaccamela, Yossi Matias, Sotiris E. Nikoletseas, Wolfgang Thomas, editors, Automata, Languages and Programming, 36th International Colloquium, ICALP 2009, Rhodes, Greece, July 5-12, 2009, Proceedings, Part I. Volume 5555 of Lecture Notes in Computer Science, pages 537-548, Springer, 2009. [doi]
Abstract is missing.