(2014). . , 8(2), 427-434. doi: 10.22059/ijer.2014.734
. "". , 8, 2, 2014, 427-434. doi: 10.22059/ijer.2014.734
(2014). '', , 8(2), pp. 427-434. doi: 10.22059/ijer.2014.734
. , 2014; 8(2): 427-434. doi: 10.22059/ijer.2014.734


Journal Management System. Powered by Sinaweb