Varga, Sándor, and Lajos Juhász. “Examination of Feral Pigeon Populations at Animal Breeding Farms”. Acta Agraria Debreceniensis, no. 26 (July 16, 2007): 52–56. Accessed November 24, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/3055.