KNÜPPEL, Michael; VAN TONGERLOO, Aloïs. Concerning the Correspondences of Ármin(ius) Vámbérys I: Correspondence with Willi Bang(-Kaup). Zeitschrift für Balkanologie, [S. l.], v. 48, n. 2, 2012. Disponível em: https://zeitschrift-fuer-balkanologie.de/index.php/zfb/article/view/302. Acesso em: 15 oct. 2026.