9J.E.Taylor and P.L. Martin(2001 ), Human Capital:Migration and Rural Population Change.In B.Gardener and G.Rausser, eds., Handbook of Agricultural Economics, MVolume I.
10Kaivan Munshi(2003 ), Networks in the Modem Economy:Mexican Migrants in the U.S.Labor Market. Quarterly Journal of Economics. 18( 2 ) :549-599.