SJØRRING, Steen; SKIBSTED, Søren. En fossil jordbund i Østjylland. Varv, [S. l.], v. 1992, n. 3, p. 90–95, 1992. DOI: 10.7146/varv.v1992i3.144497. Disponível em: https://tidsskrift.dk/varv/article/view/144497. Acesso em: 27 dec. 2025.