Authors
Asaki Saito
Department of Complex and Intelligent Systems, Future University Hakodate, Hakodate, Japan
Jun-Ichi Tamura
Institute for Mathematics and Computer Science, Tsuda College, Kodaira, Japan
Shin-Ichi Yasutomi
shinichi.yasutomi@sci.toho-u.ac.jp
Faculty of Science, Toho University, Funabashi, Japan