Two-Dimensional Alternating Turing Machines with Only Universal States

Akira Ito, Katsushi Inoue, Itsuo Takanami, Hiroshi Taniguchi. Two-Dimensional Alternating Turing Machines with Only Universal States. Inf. Comput., 55(1-3):193-221, October/November/December 1982.

Abstract

Abstract is missing.