1. Faculty of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran
2. High Point University, Department of Mathematical Sciences, High Point, NC, USA
3. Department of Electrical Engineering, Golestan University, Gorgan, Iran
4. Fachbereich Wirtschafts- und Rechtswissenschaften, HTW Berlin - University of Applied Sciences, Berlin, Germany
5. Department of Electrical Engineering, Urmia University of Technology, Urmia, Iran
6. Department of Electrical and Computer Engineering, University of NM, Albuquerque, NM 8731, USA