Holger Petersen. Homomorphic Images os Sentential Forms and Terminating Grammars (Extended Abstract). In Igor PrĂvara, Peter Ruzicka, editors, Mathematical Foundations of Computer Science 1997, 22nd International Symposium, MFCS 97, Bratislava, Slovakia, August 25-29, 1997, Proceedings. Volume 1295 of Lecture Notes in Computer Science, pages 448-457, Springer, 1997.
Abstract is missing.