PEEL, J.; SMITH, M. The Wandel Valley Formation (Early - Middle Ordovician) of North Greenland and its correlatives. Rapport Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 137, p. 61–92, 1988. DOI: 10.34194/rapggu.v137.8016. Disponível em: https://geusjournals.org/index.php/rapggu/article/view/8016. Acesso em: 3 jul. 2024.