University of Craiova, Romania
Islamic Azad University, Iran
University of Malaya, Malaysia
Islamic Azad University, Iran
Universiti Utara Malaysia, Malaysia
Technical University of Iasi, Romania
Sharif University of Technology, Iran
University of Craiova, Romania
Centre for Research in Mathematics, Mexico
Yazd University, Iran
University of the East, Philippines
Universidad Distrital FJC, Colombia
Indian Institute of Technology, India
Punjab Technical University, India
University of Malaya, Malaysia
Bandung Institute of Technology, Indonesia
Vellore Institute of Technology, India
Islamic Azad University, Iran
Ain Shams University, Egyptian
Otago University, New Zealand
Kastamonu University, Turkey