Hierarchies based on the number of cooperating systems of three-dimensional finite automata. - Yasuo Uchida; Makoto Sakamoto; Satoshi Okatani; Kaoru Kajisa; Masatsugu Fukuda; Tomoya Matsukawa; Ayumi Taniue; Takao Ito; Hiroshi Furutani; Michio Kono (Artif. Life Robotics, 2009)

Parallel Turing machines on four-dimensional input tapes. - Takao Ito; Makoto Sakamoto; Ayumi Taniue; Tomoya Matsukawa; Yasuo Uchida; Hiroshi Furutani; Michio Kono (Artif. Life Robotics, 2010)