ROTS, S. Het Stegengebied in beweging. Bulletin KNOB, [S. l.], v. 92, n. 1-2, p. 28–29, 1993. DOI: 10.7480/knob.92.1993.1-2.501. Disponível em: https://bulletin.knob.nl/index.php/knob/article/view/Rots28. Acesso em: 29 apr. 2024.