Esslinger, Theodore L., Eric Steen Hansen, and Steven D. Leavitt. “The Brown Parmelioid Lichen Species in Greenland”. Folia Cryptogamica Estonica 51 (July 1, 2014): 25–48. Accessed March 29, 2024. https://ojs.utlib.ee/index.php/FCE/article/view/fce.2014.51.03.