MARYAM AZARI TAKAMI1, REZA SHEIKH2 AND SHIB SANKAR SANA3
1Department of Accounting and Management
Shahid Beheshti University
Pin 1983969411, Iran
E-mail: maryam.azari90@gmail.com
2Department of Management and Industrial Engineering
Shahrood University
Shahroud, Iran
E-mail: resheikh@shahroodut.ac.ir
3Department of Mathematics
Bhangar Mahavidyalaya
South 24 Parganas, W.B. 743502 India
E-mail: shib sankar@yahoo.com