Cvijanović, D., A. Stojković, and J. Lang. “The Condition and Perspectives of Poultry Production Development on Municipality Lajkovac Area”. Ekonomika Poljoprivrede, vol. 57, no. Spec.num.2, Dec. 2010, pp. 438-4, https://ea.bg.ac.rs/index.php/EA/article/view/1022.