About the Authors
Tokunaga M.
E-mail: tokunaga@kansai-u.ac.jp
Dr. Sci. (Econ.), Prof., Faculty of Business and Commerce, Kansai University, Osaka, Japan
Articles in journal:
E-mail: tokunaga@kansai-u.ac.jp
Dr. Sci. (Econ.), Prof., Faculty of Business and Commerce, Kansai University, Osaka, Japan