SCHALLER, Helmut. Beginnings and Development of Bulgarian Studies in Bavaria in the Twentieth Century. Zeitschrift für Balkanologie, [S. l.], v. 52, n. 1, 2016. Disponível em: https://www.zeitschrift-fuer-balkanologie.de/index.php/zfb/article/view/438. Acesso em: 17 oct. 2026.