Hajnal Andréka, István Németi. Some Universal Algebraic and Model Theoretic Results in Computer Science. In Ferenc Gécseg, editor, Fundamentals of Computation Theory, FCT 81, Proceedings of the 1981 International FCT-Conference, Szeged, Hungary, August 24-28, 1981. Volume 117 of Lecture Notes in Computer Science, pages 16-23, Springer, 1981.
Abstract is missing.