1. Institute of Physics, University of Łodź, Pomorska 149/153, PL-90-236 Łodź, Poland
2. Institute of Mathematics, Polish Academy of Sciences, Łodź Branch, Banacha 22, PL-90-238 Łodź, Poland
3. High School of Business, Kolejowa 22, PL-26-600 Radom, Poland
4. Department of Computer and System Analysis, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, 156-8550 Setagaya-ku, Tokyo, Japan