LEHTOVAARA, J. J. Traces of alum shale in the Finnish Caledonides of the Enontekiö Lapland. Fennia - International Journal of Geography, [S. l.], v. 164, n. 1, p. 95–103, 1986. Disponível em: https://fennia.journal.fi/article/view/9051. Acesso em: 9 may. 2024.