1. The structure of the aquatic macrophytic vegetation of Prespes lakes;Babalonas,1993
2. Implementation of EU agrienviroment regulation 2078,1994
3. Gender and Culture Influences on Attitudes Towards National Park Punta Izoto, Honduras: An Assessment for Participatory Conservation and Management;Conway,1997
4. Parks, plans and people. Protected areas and socio-economic development,1987
5. Observations on the aquatic vegetation of lake Mikri Prepa;Diapoulis,1983