BALOG, I. M., LUMPERDEAN, I., GRÄF, R., & BOLOVAN, I. (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