Arturo Tozzi1, James F Peters2. 1. Center for Nonlinear Science, Department of Physics, University of North Texas, 1155 Union Circle, #311427, Denton, TX 76203-5017, USA. Electronic address: tozziarturo@libero.it. 2. Department of Electrical and Computer Engineering, University of Manitoba, 75A Chancellor's Circle, Winnipeg, MB R3T 5V6, Canada; Department of Mathematics, Adıyaman University, 02040 Adıyaman, Turkey. Electronic address: James.Peters3@umanitoba.ca.