1. Department of Mathematics, Statistics and Physics, College of Arts and Sciences, Qatar University, Doha, Qatar
2. Department of Mathematics, Comsats University Islamabad, Lahore, Pakistan
3. Department of Chemistry, Comsats University Islamabad, Lahore, Pakistan
4. Jamoum University College, Umm Al-Qura University, Makkah, Saudi Arabia
5. Faculty of Computers and Informatics, Suez Canal University, El Salam District, Ismailia, Egypt
6. Institute of Systems Engineering, Macau University of Science and Technology, Taipa, Macau
7. Hitachi Building Technology (Guangzhou) Co., Ltd, Guangzhou, China