Aysan, A. F., M. M. Karakaya, and M. Uyanik. “Panel Stochastic Frontier Analysis of Profitability and Efficiency of Turkish Banking Sector in the Post Crisis Era”. Journal of Business Economics and Management, vol. 12, no. 4, Nov. 2011, pp. 629-54, doi:10.3846/16111699.2011.599411.