Fidanska, Bozhura, and Ivan Boevski. “Contract Farming for Sustainable Agriculture in Bulgaria: Challenges and Opportunities for Delivering Agro-Ecological Public Goods”. Acta Scientiarum Polonorum. Oeconomia, vol. 25, no. 3, Sept. 2026, pp. 5-15, doi:10.22630/ASPE.2026.25.3.9.