7Jennifer Lauby & Oded Stark. Individual Migration as a Family Strategy: Young Women in the Philippines [J ]. Popula- tion Studies : A Journal of Demogrothy, 1998, (42) :473-486.
8O. Stark & S. Yitzhaki. Labour Migration as a Response to Relative Deprivation [J ]. Journal of Population Economics, 1988, (1) :57-70.