Existence of Positive Solution for the Cauchy Problem for an Ordinary Differential Equation. - Toshiharu Kawasaki; Masashi Toyoda (NL-MUA, 2011)

On a sufficient condition of Lusin's theorem for non-additive measures that take values in an ordered topological vector space. - Toshikazu Watanabe; Toshiharu Kawasaki; Tamaki Tanaka (Fuzzy Sets Syst., 2012)

Note on the Hahn-Banach Theorem in a Partially Ordered Vector Space. - Toshiharu Kawasaki; Masashi Toyoda; Toshikazu Watanabe (J. Appl. Math., 2013)