Wigier, Marek, and Floriańczyk Zbigniew. “The Impact of the Economic and Financial Crisis on the Agri-Food Sector in Poland”. Economics of Agriculture 57, no. Spec.num.2 (December 3, 2010): 382–389. Accessed April 28, 2024. https://ea.bg.ac.rs/index.php/EA/article/view/1016.