JUSÉLIUS, A. Hydrologiska undersökningar i Kallavesigrenen af Saima vattensystem. Fennia - International Journal of Geography, [S. l.], v. 4, n. 1, p. 1–8, 1891. Disponível em: https://fennia.journal.fi/article/view/156906. Acesso em: 23 feb. 2025.