6Bauer, P. T.: Review: Lewis' Theory of Economic Growth, The American Economic Review, Vol. 46, No. 4. pp. 632-641, 1956.
7Bhattacharyya, A. and Parker, E.: Labor Productivity and Migration in Chinese Agriculture: A Stochastic Frontier Approach, China Economic Review, 10, pp.59-74, 1999.
8Eckaus, R. S.: The Factor Proportions Problem in Underdeveloped Areas, The American Economic Review, Vol. 45, No. 4, pp. 539-565, 1955.
9Ellis, Howard S.: A Note on Unemployment in Underdeveloped Countries, Journal of Economics, Vol. 26, No. 1-3, pp. 64-68, 1966.
10Fei, John C. H. and Ranis, Gustav: Development of the Labor Surplus Economy: Theory and Policy, Richard D. Irwin Inc., 1964.