1. Participatory GIS: opportunity or oxymoron;Abbott;PLA Notes,1998
2. Participation, literacy and empowerment: the continuing evolution of Reflect;Archer;Participatory Learning and Action [formerly PLA Notes, formerly RRA Notes],2004
3. Barahona , Carlos Sarah Levy 2003 How to Generate Statistics and Influence Policy Using Participatory Methods in Research: Reflections on Work in Malawi 1999-2002