Åhman, Birgitta. “The Use of Bentonite and Zeolite As Caesium-Binders in Feed to Reindeer - Experiences from Sweden”. Rangifer 10, no. 4 (September 1, 1990): 41–46. Accessed June 27, 2022. https://septentrio.uit.no/index.php/rangifer/article/view/912.