Zarić, Vlade, Zorica Vasiljević, and Danijela Petković. “Concentration - Determination of the Relevant Market – Theory and Practice in the Republic of Serbia”. Economics of Agriculture 57, no. Spec.num.2 (December 3, 2010): 390–398. Accessed April 28, 2024. https://www.ea.bg.ac.rs/index.php/EA/article/view/1017.