Heeks, R. & Molla, A. (2009) Impact Assessment of ICT-for-Development Projects: A Compendium of Approaches, Development Informatics Working Paper no.36, Centre for Development Informatics, University of Manchester, UK.
http://www.sed.manchester.ac.uk/idpm/research/publications/wp/di/di_wp36.htm
http://globalimpactstudy.org/