Non-closure property of space-bounded two-dimensional alternating Turing machines. - Tokio Okazaki; Atsuyuki Inoue; Katsushi Inoue; Akira Ito 001; Yue Wang 002 (Inf. Sci., 2002)

A note on one-pebble two-dimensional Turing machines. - Atsuyuki Inoue; Katsushi Inoue; Akira Ito 001; Yue Wang 002; Tokio Okazaki (Electron. Notes Discret. Math., 2003)

Inkdot versus Pebble over Two-Dimensional Languages. - Atsuyuki Inoue; Akira Ito 001; Kunihiko Hiraishi; Katsushi Inoue (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Some properties of one-pebble Turing machines with sublogarithmic space. - Atsuyuki Inoue; Akira Ito 001; Katsushi Inoue; Tokio Okazaki (Theor. Comput. Sci., 2005)

Sublogarithmically Space-Bounded Alternating One-Pebble Turing Machines with only Universal States. - Katsushi Inoue; Akira Ito 001; Atsuyuki Inoue (Formal Models, Languages and Applications, 2007)