1. Department of Mechanical Engineering, Faculty of Chamran, Guilan Branch, Technical and Vocational University (TVU), Tehran, Iran
2. Department of Industrial, Manufacturing and Systems Engineering, Texas Tech University, Lubbock, TX, USA
3. School of Mathematical Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China
4. Academy of Mathematics and Systems Science, Beijing, People's Republic of China
5. Department of Mathematics, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran