1. Can better targeting improve the effectiveness of Ghana's fertilizer subsidy program?: lessons from Ghana and other countries in Africa south of the Sahara;Houssou,2017
2. Fertilizer subsidies in sub-Saharan Africa;Druilhe,2012
3. Fertilizer use in African agriculture: lessons learned and good practice guidelines;Morris,2007
4. The use of input subsidies in developing countries;Wiggins,2010
5. Public spending in developing countries;Fan,2003