The canonical filtration of higher dimensional purely elliptic singularity of a special type. Masataka Tomari — 1991 Inventiones mathematicae

On singularities arising from the contraction of the minimal section a a ruled surface. Masataka Tomari; Fumio Hidaka — 1989 Manuscripta mathematica

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