About SAKO Akifumi
About Kushiro National Coll. of Technol., Otanoshike-Nishi 2-32-1, Kushiro 084-0916, JPN
About SUZUKI Toshiya
About Kushiro National Coll. of Technol., Otanoshike-Nishi 2-32-1, Kushiro 084-0916, JPN
About UMETSU Hiroshi
About Kushiro National Coll. of Technol., Otanoshike-Nishi 2-32-1, Kushiro 084-0916, JPN
About Journal of Mathematical Physics