Petr Hájek. Arithmetical Complexity of Some Problems in Computer Science. In Jozef Gruska, editor, Mathematical Foundations of Computer Science 1977, 6th Symposium, Tatranska Lomnica, Czechoslovakia, September 5-9, 1977, Proceedings. Volume 53 of Lecture Notes in Computer Science, pages 282-287, Springer, 1977.
Abstract is missing.