HEDDING, D. W. Pronival ramparts: origin and development of terminology. ERDKUNDE, [S. l.], v. 70, n. 2, p. 141–151, 2016. DOI: 10.3112/erdkunde.2016.02.03. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/2786. Acesso em: 30 apr. 2025.