Akemi Matsumoto

Parameterized Kantorovich Inequality For Positive Operators

M. Fujii, E. Kamei, Akemi Matsumoto, 1995 .

A Short Proof of the Best Possibility for the Grand Furuta Inequality

M. Fujii, Akemi Matsumoto, Ritsuo Nakamoto, 1999 .

Further generalizations of Bebiano–Lemos–Providência inequality

M. Fujii, Akemi Matsumoto, Ritsuo Nakamoto, 2022, Advances in Operator Theory.