6Johnson, George and Whitelaw, W E. (1974) “Urban- Rural Income Tranders in Kenya: An Estimated - Remittance Function”. Economic Development and Cultural Orange: Vol 22, 473- 479.
7Lucas, R E and Stark, O. (1985), “Motivations to Remit: Evidence from Botswana” the Journal of Political Economy,Vol. 93, 901-918.
8Zhao, Yaohui (1999) : “Labor Migration and Eamings Differences: The Case of Rural China”, Economic Development and Cultural Change, Vol. 47.
9Harris, J and Todaro, M. 1970 “Migration, Unemployment and Development: A Two Sector Analysis,” American Economic Review, Vol. 60, 126-142.
10Heekman, J. (1979) “Sample Selection Bias as A Specification Error,” Econometrica, Vol. 47.
