2Kevin J. Fox (2002). Efficiency in the public sector, pp. 21- 76.
3Boston: Kluwer Academic Publishers. Leibenstein, H. (1966). Allocative efficiency vs. X-efficiency. American Economic Review.
4Oxley, H., Maher, M., Martins, J. P. & Nicoletti, G. (1990). The public sector: issues for the 1990s. OECD Working Paper (Vol. 90). Paris: Organization for Economic Cooperation and Development.
5C. Yeh, P. J. Vaughn Jr. (2007). Government Efficiency and Economic Growth. Int Adv Econ Res, 1.