Uniform Boundedness Principle
Sakurai, Hideki, Kunimune, Hisayoshi, Shidama, Yasunari
Contracting Mapping on Normed Linear Space
Miyajima, Keiichi, Korniłowicz, Artur, Shidama, Yasunari
Formalization of the Data Encryption Standard
Okazaki, Hiroyuki, Shidama, Yasunari