9Akhavein, J. D., Berger, A. N., Humphrey, D. B., 1997, "The Effects of Megamergers on Efficiency and Prices: Evidence from a Bank Profit Function", Review of Industrial Organization, 12, pp.95-139.
10Cho, K. R., 1990,"Foreign Banking Presence and Banking Market Concentration :The Case of Indonesia", Journal of Development Studies, 27, pp.98-110.