Jacques Sakarovitch. An Algebraic Framework for the Study of the Syntactic Monoids Application to the Group Languages. In Antoni W. Mazurkiewicz, editor, Mathematical Foundations of Computer Science 1976, 5th Symposium, Gdansk, Poland, September 6-10, 1976, Proceedings. Volume 45 of Lecture Notes in Computer Science, pages 510-516, Springer, 1976.
Abstract is missing.