On the group structure of Boolean lattices. Proc., Japan. Acad. 32 (1956), pp. 423-425
Topological structures in ordered linear spaces. (with Ichiro Amemiya), J. Math. Soc. Jp., vol. 9 (1957), pp. 131-142.
位相線形空間、--Lebesgue積分論とBanach空間論の発展として--, 数学, vol.12 (1960), pp. 210-225.
