Mursaleen, Department of Mathematics, Aligarh Muslim University, Aligarh-202002
Ravindra, Department of Mathematics and Statistics, Banasthali University, Banasthali 304 022
Shaifali, Department of Mathematics, National Institute of Technology Kurukshetra
Shireen, Department of Mathematics, Faculty of Science, Banaras Hindu University, Varanasi-221005
W. F., Madras Christian College