FRYKMAN, P. Cambro–Ordovician rocks of C. H. Ostenfeld Nunatak, northern East Greenland. Rapport Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 91, p. 125–132, 1979. DOI: 10.34194/rapggu.v91.7632. Disponível em: https://geusjournals.org/index.php/rapggu/article/view/7632. Acesso em: 3 jul. 2024.