1. Department of Theoretical Physics, Faculty of Mathematics and Natural Sciences, University of Rzeszow, Πgonia 1, 35-310 Rzeszów, Poland
2. Institute of Mathematics, Poznań University of Technology, Piotrowo 3A, 60-965 Poznań, Poland
3. Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland and East European State University in Przemyśl, Książąt Lubomirskich 6, 37-700 Przemyśl, Poland