KOLEV, Boris; GROZEVA, MARIA. REGIONAL DISTRIBUTION OF SOME DEMOGRAPHIC AND LAND-USE PARAMETERS IN BULGARIA. Discussion Papers, [S. l.], n. Special, p. 38–43, 2012. Disponível em: http://dp.rkk.hu/index.php/DP/article/view/2373. Acesso em: 3 apr. 2025.