GHEOCA, V. “Land Snail Communities of Cheile Vârghișului Nature Reserve (the Perșani Mountains, Romania)”. Studia Universitatis Babeș-Bolyai Biologia, vol. 61, no. 2, Dec. 2016, pp. 167-76, http://193.231.18.162/index.php/subbbiologia/article/view/4533.