The injectivity of Frobenius acting on cohomology and local cohomology modules. Kei-ichi Watanabe; Nobuo Hara — 1996 Manuscripta mathematica

Invariant subrings of ... [X, Y, Z] which are complete intersections. Kei-ichi Watanabe; Denis Rotillon — 1982 Manuscripta mathematica

Normal Zr-Graded Rings and Normal Cyclic Covers. Masataka Tomari; Kei-ichi Watanabe — 1992 Manuscripta mathematica