Korhonen, Hannu, and Paavo Niemelä. “Comparison Between the Use of Open and Walled Platforms by Juvenile Blue Foxes (Alopex Lagopus)”. Agricultural and Food Science 5, no. 2 (March 1, 1996): 177-184. Accessed July 6, 2020. https://journal.fi/afs/article/view/72733.