1Azariadis,Costas,and Allan Drazen., 1990. "Threshold Externalities in Economic Development". Quarterly Journal of Economics 105 (2):501-526.
2Barro, Robert J. and Xavier Sala-I-Martin. 1995., Economic Growth, New York:McGraw Hill.
3Becker, Gary S., 1964. Human Capital. A Theoretical and Empirical Analysis, With Special Reference to Education, New York : Columbia University Press.
4Davies, C. T. M., 1973. Relationship of Maximum Aerobic Power Output to Productivity and Absenteeism of East African sugar cane Workers.British Journal of Industrial Medicine, 30,146-154.
5Deolalikar, A. B., 1988. Nutrition and Labor Productivity in Agriculture : Estimates for Rural South India, The Review of Economics and Statistics,70.3:406-413.
6Foster, A. and Rosenzweig, M. R., 1992, Information Flows and Discrimiaation in Labor Markets in Rural Areas in Developing Countries, Proceedings of the World Bank Annual Conference on Development Economics, 173-204.
7Foster, A. and Rosenzweig, M. R., 1994, A Test for Moral Hazard in the Labor Market:Effort, Health and Calorie Consumption, Review of Economics and Statistics,76.2:213-227.
8Keys, A,, et al,, 1950, The Biology of Human Starvation, University of Minnesota Press, Minneapolis, MN.
9Lathara, M., 1993 ,The Relationship of Nutrition to Productivity and Well-being of Workers, iP. Pinstrup-Anersen, ed., The Political Economy of Food and nutrition Policies, Baltimore :Johns Hopkins Press.
10Leibenstein, H., 1957, Economic Backwardness and Economic Growth, pp. 62-67, Wiley, New York.
