1. B. Sakar,
TITLE: A study on efficiency and productivity of Turkish banks in Istanbul Stock Exchange using Malmquist DEA,
Journal of American Academy of Business 8 (2006), pp. 145–155.

2. Rolf Färe，  Gerald Whittaker
TITLE: AN INTERMEDIATE INPUT MODEL OF DAIRY PRODUCTION USING COMPLEX SURVEY DATA
Journal of Agricultural EconomicsVolume 46 Issue 2, Pages 201 - 213