Krumalova, Veronika; Backman, Stefan(Sustainable Agriculture in Central and Eastern European Countries (CEESA), Humboldt University, Berlin, Germany, 2003)
Gatzweiler, Franz W.; Backman, Stefan; Sipilainen, Timo; Zellei, Anett(Sustainable Agriculture in Central and Eastern European Countries (CEESA), Humboldt University, Berlin, Germany, 2001)
Vermillion, Douglas L.; Samad, Madar; Pusposutardjo, Suprodjo; Arif, Sigit S.; Rochdyanto, Saiful(International Water Management Institute (IWMI), Colombo, Sri Lanka, 2000)
Wittmer, Heidi; Birner, Regina(CGIAR System-wide Program on Property Rights and Collective Action, International Food Policy Research Institute, Washington, DC, 2005)