Krumalova, Veronika; Backman, Stefan(Sustainable Agriculture in Central and Eastern European Countries (CEESA), Humboldt University, Berlin, Germany, 2003)
Hukkinen, Janne; Müller-Wille, Ludger; Heikkinen, Hannu(Department of Civil and Environmental Engineering, Laboratory of Environmental Protection Publication, Helsinki University of Technology, 2003)
Pant, Dhruba; Bhattarai, Madhusudan; Basnet, Govinda(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, USA, 2008)
Loeve, Ronald; Somaratne, P. G.; Ariyaratne, B. Ranjith; Anputhas, Markandu; Jinapala, K.(International Water Management Institute, Colombo, Sri Lanka, 2003)
Padmanabhan, Martina Aruna(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, 2005)