Bültmann, H. “THE LICHEN SYNTAXA IN THE CHECKLIST OF HIGHER SYNTAXA OF EUROPE – AN OVERVIEW AND WHAT WE CAN DO WITH THEM”. Annali di Botanica 2 (April 26, 2012): 11–18. Accessed October 1, 2022. https://rosa.uniroma1.it/rosa04/annali_di_botanica/article/view/9287.