BALOG, Iosif Marin, Ioan LUMPERDEAN, Rudolf GRÄF, and Ioan BOLOVAN. 2012. ROMANIAN JOURNAL OF POPULATION STUDIES, SUPPLEMENT. 2011, (POPULATION AND ECONOMY. RURAL AND URBAN INSTANCES). Presa Universitară Clujeană. https://editura.ubbcluj.ro/index.php/puc/catalog/book/1228.