@article {3127, title = {Tree Canopy Lichens of the Great Smoky Mountains National Park}, journal = {Evansia}, volume = {20}, year = {2003}, pages = {114-127}, keywords = {All Taxa Biodiversity Inventory, Flora -- Classification and description, Forest canopy, Lichens, Trees}, author = {Ciegler, Alex and Uno H Eliasson and Harold W. Keller} }