Toshio Umezawa

On intermediate propositional logics

Toshio Umezawa, T. Umezawa, 1959, Journal of Symbolic Logic.

Troelstra A. S.. On intermediate propositional logics. Koninklijke Nederlandse Akademie van Wetenschappen, Proceedings , series A, vol. 68 (1965), pp. 141–152; also Indagationes mathematicae, vol. 27 (1965), pp. 141–152.

Toshio Umezawa, 1969 .

On Logics Intermediate between Intuitionistic and Classical Predicate Logic

Toshio Umezawa, 1959, J. Symb. Log..

Sufficient Conditions for the Multivalency of Moromorphic Functios

Toshio Umezawa, Teruo Takatsuka, Shigeo Ozaki, 1950 .

On some properties of intermediate logics

Toshio Umezawa, 1959 .

ON THE THEORY OF UNIVALENT FUNCTIONS

Toshio Umezawa, T. Umezawa, 1955 .