A.M.J.A. Berkvens, A.Fl. Gehlen, G.H.A. Venner, ’Flittich erforscht und gecolligeert...’. Opstellen over Limburgse rechtsgeschiedenis. BMGN - Low Countries Historical Review, [S. l.], v. 111, n. 4, p. 526–527, 1996. DOI: 10.18352/bmgn-lchr.4348. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105020.. Acesso em: 18 jul. 2024.