Węgrzyn M. H., Wietrzyk-Pełka P., Galanty A., Cykowska-Marzencka B. and Alterskjær Sundset M. (2019) “Incomplete degradation of lichen usnic acid and atranorin in Svalbard reindeer (<em>Rangifer tarandus platyrhynchus</em&gt;)”, Polar Research, 380. doi: 10.33265/polar.v38.3375.