EBERLIN, P. 3B. Den terrestriske Refraktion. Meddelelser om Grønland, [S. l.], v. 9, p. 229–234, 1889. DOI: 10.7146/mog.v9.139632. Disponível em: https://tidsskrift.dk/meddrgroenland/article/view/139632. Acesso em: 6 dec. 2025.