PENTEK, Zdzisław. Gunther von Pairis, Hystoria Constantinopolitana. Untersuchungen und kritische Ausgabe von Peter Orth, Hildesheim 1994. Balcanica Posnaniensia. Acta et studia, [S. l.], n. 11/12, p. 322–323, 2001. DOI: 10.14746/bp.2001.11-12.34. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/52639. Acesso em: 3 oct. 2026.