HOLM, Jørgen; RIECK, Flemming. Jels I: the First Danish Site of the Hamburgian Culture. Journal of Danish Archaeology, [S. l.], v. 2, p. 7–11, 1983. DOI: 10.1080/0108464X.1983.10589888. Disponível em: https://tidsskrift.dk/jda/article/view/125815. Acesso em: 5 dec. 2025.