1. On the product of partially ordered sets,Zenkoku-Sugaku-Danwakai, 1943 (in Japanese).
2. On some properties of the distribution,Res. Mem. Inst. Stat. Math., Vol. 5, No. 8 (1950) (in Japanese).
3. A note on the concentration functions,Kodai Math. Seminar Reports, Nos. 1, 2 (1950).
4. A remark to the conditional probobility,Res. Mem. Inst. Stat. Math., Vol. 5, No. 11 (1950) (in Japanese)
5. A remark to a result of A. C. Berry,Res. Mem. Inst. Stat. Math., Vol. 6. No. 9 (1951) (in Japanese).