1. Efficiency of Agrarian Organizations;Hrabrin Bachev;Farm Management and Rural Planning,2004
2. Management of Environmental Challenges and Sustainability of Bulgarian Agriculture;Hrabrin Bachev;Environmental Challenges and Human Security: Recognizing and Acting on Hazard Impacts,2008
3. Mechanisms of Governance of Agro-Ecosystem Services;Hrabrin ; Bachev;Governing of Agro-ecosystem Services. Modes, Efficiency, Perspectives,2009
4. Competitiveness of Bulgarian Farms in Conditions of EU CAP Implementation;Hrabrin Bachev;Agricultural Research Updates,2012