1. Doctoral School of Economic and Regional Sciences, Hungarian University of Agriculture and Life Sciences (MATE), Pater Karoly Utca 1 , 2100 Gödöllő , Hungary
2. Centre for Halal Industry at Ministry of Industry of the Republic of Indonesia, Jl. Gatot Subroto, Kav 52-53 , South Jakarta , 12950 Greater Jakarta , Indonesia
3. Agricultural Socio-Economics, Universitas Gadjah Mada , Yogyakarta 55281 Special Region of Yogyakarta, Yogyakarta , Indonesia
4. Doctoral School of Food Science, Hungarian University of Agriculture and Life Sciences , Villányi Street 29-43, 1118 Budapest , Hungary
5. Polytechnic APP Jakarta at Ministry of Industry of the Republic of Indonesia , Jl. Timbul No. 34 , Jagakarsa , South Jakarta, Greater Jakarta , Indonesia
6. Institute of Agricultural and Food Economics, Hungarian University of Agriculture and Life Sciences, Pater Karoly Utca 1 , 2100 Gödöllő , Hungary
7. Institute of Economics and Finance, Budapest Metropolitan University, Nagy Lajos Király Utca 1-9. , 1148 Budapest , Hungary