Jacoby, Hanan G. & Mansuri, Ghazala, 2011. “Crossing boundaries : gender, caste and schooling in rural Pakistan,” Policy Research Working Paper Series 5710, The World Bank.
http://www-wds.worldbank.org/servlet/WDSContentServer/WDSP/IB/2011/06/28/000158349_20110628133715/Rendered/PDF/WPS5710.pdf