KOUDELKA O. P., V. J. . Heinrich von Bitterfeld († c. 1405), Professor an der Universität Prag. Archivum Fratrum Praedicatorum, [S. l.], v. 23, p. 5.0–65.0, 1953. Disponível em: https://heyjoe.fbk.eu/index.php/afp/article/view/11949. Acesso em: 10 mar. 2026.