Constant Leaf-Size Hierarchy of Two-Dimensional Alternating Turing Machines.

Akira Ito Katsushi Inoue Itsuo Takanami Yasuyoshi Inagaki Constant Leaf-Size Hierarchy of Two-Dimensional Alternating Turing Machines. 509-524 1994 8 IJPRAI 2 db/journals/ijprai/ijprai8.html#ItoITI94 http://dx.doi.org/10.1142/S0218001494000267