A Saturation Property of Ideals and Weakly Compact Cardinals. - Joji Takahashi (J. Symb. Log., 1986)

Partition Properties of M-Ultrafilters and Ideals. - Joji Takahashi (J. Symb. Log., 1987)

Precipitousness of a Sum of Ideals on Complete Boolean Algebras. - Joji Takahashi; Kazuaki Kajitori (Math. Log. Q., 1988)