DE VRIES, Bernard. Lichens, Tombstones, and Lichenometry. Blue Jay, [S. l.], v. 72, n. 1, 2014. DOI: 10.29173/bluejay6093. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/6093. Acesso em: 6 apr. 2025.