ARUP, Erik. W.M.Peitz: Untersuchungen zu Urkundenfalschungen des Mittelalters. I. Die Hamburger Falschungen. Freiburg (Herder) 1919. Historisk Tidsskrift, [S. l.], v. 9, 1923. DOI: 10.7146/ht.v9i0.55240. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/55240. Acesso em: 24 aug. 2026.