TYKKYLÄINEN, M. Accessibility in the provinces of Finland. Fennia - International Journal of Geography, [S. l.], v. 159, n. 2, p. 361–396, 1981. DOI: 10.11143/fennia.9158. Disponível em: https://fennia.journal.fi/article/view/9158. Acesso em: 19 dec. 2024.