Seppälä, Matti, and Jukka Rastas. “Vegetation Map of Northernmost Finland With Special Reference to Subarctic Forest Limits and Natural Hazards”. Fennia - International Journal of Geography 158, no. 1 (January 1, 1980): 41–61. Accessed April 26, 2024. https://fennia.journal.fi/article/view/9174.