Izuchi Keiji; Nakazi Takahiko; Seto Michio: Backward shift invariant subspaces in the bidisc. III. In: Acta scientiarum mathematicarum, (70) 3-4. pp. 727-749. (2004)
Izuchi Keiji; Yang Rongwei: Strictly contractive compression on backward shift invariant subspaces over the torus. In: Acta scientiarum mathematicarum, (70) 1-2. pp. 147-165. (2004)
Izuchi Keiji; Takagi Hiroyuki; Watanabe Seiji: Sequential Korovkin type theorems and weighted composition operators. In: Acta scientiarum mathematicarum, (62) 1-2. pp. 161-174. (1996)
Izuchi Keiji; Matsugu Yasuo: Outer functions and invariant subspaces on the torus. In: Acta scientiarum mathematicarum, (59) 3-4. pp. 429-440. (1994)