Węgrzyn Michał Hubert, Wietrzyk-Pełka Paulina, Galanty Agnieszka, Cykowska-Marzencka Beata, and Alterskjær Sundset Monica. “Incomplete Degradation of Lichen Usnic Acid and Atranorin in Svalbard Reindeer (<em>Rangifer Tarandus platyrhynchus</Em&gt;)”. Polar Research 380 (January 22, 2019). Accessed April 20, 2024. https://polarresearch.net/index.php/polar/article/view/3375.