Marmor, Liis, Tiiu Tõrra, Ede Leppik, Lauri Saag, and Tiina Randlane. “Epiphytic Lichen Diversity in Estonian and Fennoscandian Old Coniferous Forests”. Folia Cryptogamica Estonica 48 (October 1, 2011): 31–43. Accessed February 23, 2024. https://ojs.utlib.ee/index.php/FCE/article/view/13631.