1. College of Science; Hohai University; Nanjing PR China
2. College of Engineering, Mechanics and Materials; Hohai University; Nanjing PR China
3. Department of Mathematics; Shaheed Benazir Bhutto University Sheringal; Khyber Pakhtunkhwa Pakistan
4. Institute of Space Sciences; University of Peshawar; Khyber Pakhtunkhwa Pakistan