Gaussian Integers
Futa, Yuichi, Okazaki, Hiroyuki, Mizushima, Daichi, Shidama, Yasunari
Open Mapping Theorem
Sakurai, Hideki, Kunimune, Hisayoshi, Shidama, Yasunari
Cell Petri Net Concepts
Jitsukawa, Mitsuru, Kawamoto, Pauline, Shidama, Yasunari, Nakamura, Yatsuka