SCHMIDT, F. H. Toelichting op het themanummer. Bulletin KNOB, [S. l.], v. 104, n. 5, p. 137, 2005. DOI: 10.7480/knob.104.2005.5.261. Disponível em: https://bulletin.knob.nl/index.php/knob/article/view/Schmidt137. Acesso em: 22 jun. 2024.