Shahidi, A. , , Yavari, K. , , Dehghan Dehnavi, M. A. , and Heydari, H. . "Calculating Cost Efficiency of Banking Sector in Iran and Evaluating the Impact of Banksâ Marketing Performance on Cost Efficiency", New Marketing Research Journal, 6, 1, 2016, 143-160. doi: 10.22108/nmrj.2016.20658