Borecka, A., Sowula-Skrzyńska, E., & Szumiec, A. (2009). Compensatory surcharges to less-favored areas (LFA) as a factor of profitability improvement of low-profitable sheep farms. The Scientific Journal European Policies, Finance and Marketing, (2(51), 225–233. Retrieved from https://pefim.sggw.edu.pl/article/view/1596