SØRENSEN, H. On sapphirine from West Greenland. Bulletin Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 12, p. 1–32, 1955. DOI: 10.34194/bullggu.v12.6544. Disponível em: https://geusjournals.org/index.php/bullggu/article/view/6544. Acesso em: 5 jul. 2024.