tolejniczak@kozminski.edu.pl
itohisa@hosei.ac.jp
t-abo@abox8.so-net.ne.jp
kumon@hosei.ac.jp
© 2019 Tomasz Olejniczak, Masato Itohisa, Tetsuo Abo, Hiroshi Kumon, published by SAN UniversityThis work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.