Compactness in Metric Spaces
Nakasho, Kazuhisa, Narita, Keiko, Shidama, Yasunari
Riemann Integral of Functions from ℝ into Real Banach Space
Narita, Keiko, Endou, Noboru, Shidama, Yasunari
Torsion Z-module and Torsion-free Z-module
Futa, Yuichi, Okazaki, Hiroyuki, Nakasho, Kazuhisa, Shidama, Yasunari