[1] Univ Gadjah Mada, Fac Agr, Dept Agr SocioEcon, Jl Flora, Yogyakarta 55281, Indonesia
[2] Univ Gadjah Mada, Vocat Coll, Dept Econ & Business, Jl Notonegoro 1, Bulaksumur 55281, Indonesia
[3] Univ Gadjah Mada, Fac Law, Dept Agrarian Law, Jl Sosio Yustisia 1, Bulaksumur 55281, Indonesia
[4] Univ Gadjah Mada, Ctr Asia Pacific Studies, Jl Tevesia B 13, Yogyakarta 55281, Indonesia
[5] Univ Gadjah Mada, Fac Agr, Dept Agr SocioEcon, Yogyakarta 55281, Indonesia