ARNOLD, Udo. Prof. P. Dr. Bernhard (Johann Alois) Demel OT. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders. Online. 18 October 2017. Vol. 22, pp. 307-310. [Accessed 23 July 2024]. DOI 10.12775/OM.2017.009.