LOTAN, S. Empowering and Struggling in an Era of Uncertainty and Crisis – The Teutonic Military Order in the Latin East, 1250–1291. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders, [S. l.], v. 16, p. 19–28, 2011. DOI: 10.12775/OM.2011.002. Disponível em: https://apcz.umk.pl/OM/article/view/OM.2011.002. Acesso em: 7 dec. 2021.