Riemann-Stieltjes Integral
Narita, Keiko, Nakasho, Kazuhisa, Shidama, Yasunari
Isomorphism Theorem on Vector Spaces over a Ring
Futa, Yuichi, Shidama, Yasunari
The Basic Existence Theorem of Riemann-Stieltjes Integral
Nakasho, Kazuhisa, Narita, Keiko, Shidama, Yasunari