1. From discourse to (political) action: steps towards a European work programme for the UN decade of education for sustainable development,2007
2. Academic staff development as a catalyst for curriculum change towards education for sustainable development: an output perspective;Journal of Cleaner Production,2012
3. State of the art in research on higher education for sustainable development,2015
4. Synthesising case-study research – ready for the next step?;Environmental Education Research,2012
5. Causes and consequences of environmental degradation in Ethiopia,2003