http://www.ids.ac.uk/download.cfm?file=wp142.pdf

"...This paper synthesises current thinking and evidence on a number of issues around the design and impact of social protection programmes, including: the case for and against targeting resource transfers; alternative approaches to targeting; what form resource transfers should take (cash, food, agricultural inputs); the 'crowding out' debate; cost efficiency of transfer programmes; whether these programmes meet the real and articulated needs of their 'beneficiaries'; impacts on poverty and vulnerability, and fiscal andpolitical sustainability." (Au). Publication from 2002; available in pdf format.