Huttunen, Inese, Markus Huttunen, Tapio Salo, Pasi Mattila, Liisa Maanavilja, and Tarja Silfver. “National-Scale Nitrogen Loading from the Finnish Agricultural Fields Has Decreased since the 1990s”. Agricultural and Food Science 32, no. 3 (August 31, 2023): 1–16. Accessed June 2, 2024. https://journal.fi/afs/article/view/125385.