KÓSA, Ferenc. “Distribution, Population Size and Population Dynamics of the White Stork (‘Ciconia ciconia’) in Cluj County (Romania)”. Studia Universitatis Babeș-Bolyai Biologia, vol. 60, no. 2, Dec. 2015, pp. 61-73, https://studia.reviste.ubbcluj.ro/index.php/subbbiologia/article/view/4596.