Nayak, AK (Corresponding Author), Indian Inst Technol Rorkee, Dept Math, Rorkee 247667, India.
Nayak, A. K., Indian Inst Technol Rorkee, Dept Math, Rorkee 247667, India.
Univ Stuttgart, Inst Aerosp Thermodynam, Pfaffenwaldring 31, D-70569 Stuttgart, Germany.