1. Fakulti Teknologi Kejuruteraan Mekanikal dan Pembuatan, Universiti Teknikal Malaysia Melaka, Melaka, Malaysia
2. Department of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, UKM, Selangor, Malaysia
3. Department of Mathematics and Social Sciences, Sukkur IBA University, Sindh, Pakistan
4. Department of Mathematical Sciences, Federal Urdu University of Arts, Science & Technology, Gulshan-e-Iqbal Karachi, Pakistan
5. Department of Mathematics, Babeş-Bolyai University Cluj-Napoca, Romania