A. K. Sinha
Department of Economics, East West University, 43 C/A Mohakhali, Dhaka, Bangladesh
A. H. M. Rahmatullah Imon
Department of Mathematical Sciences, Ball State University, Muncie, IN 47306, U.S.A
Md Rakibul Hasan
Department of APCE, East West University, Mohakhali, Dhaka, Bangladesh
S. K. Bhattacharjee
Department of Statistics, University of Rajshahi, Rajshahi, Bangladesh