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2. Birdsall N 2011 World Bank program for results financing http://www.cgdev.org/publication/world-bank-program-results-financing-open-letter-senator-leahy
3. Cashin C 2011 Major developments in results-based financing in OECD countries-New Zealand primary health organization performance program
4. De Hennin C Rozema H 2011 Study on results-based programming and financing, in support of shaping the multi-annual financial framework after 2013 http://www.dev-practitioners.eu/fileadmin/Redaktion/Documents/Links_and_docs/results-based_program.pdf?PHPSESSID=1360ab7511be03f1af3597cbbe8a5ca9
5. Department for International Development (UK) 2013 Payment by results-increasing the effectiveness of aid