PETRYK, A. Upper Carboniferous (Late Pennsylvanian) microfossils from the Wandel Sea Basin, Peary Land, eastern North Greenland. Rapport Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 85, p. 16–21, 1977. DOI: 10.34194/rapggu.v85.7520. Disponível em: https://geusjournals.org/index.php/rapggu/article/view/7520. Acesso em: 3 jul. 2024.