@article {3223,
	title = {Evaluation of Tree Canopy Epiphytes and Bark Characteristics Associated with the Presence of Corticolous Myxomycetes},
	journal = {Botany-Botanique},
	volume = {87},
	year = {2009},
	month = {May},
	pages = {509-517},
	keywords = {Algae, Ecology, Forest canopy, Forests, Fungi, Lichens, Mosses, Slime molds},
	url = {http://www.nrcresearchpress.com/doi/pdf/10.1139/B09-027},
	author = {Everhart, Sydney E and Joseph S. Ely and Harold W. Keller}
}
@article {3225,
	title = {Influence of Bark Ph on the Occurrence and Distribution of Tree Canopy Myxomycete Species},
	journal = {Mycologia},
	volume = {100},
	year = {2008},
	month = {March- April},
	pages = {191-204},
	keywords = {Acid rain, Forest canopy, Hemlocks, Slime molds},
	author = {Everhart, Sydney E and Harold W. Keller and Joseph S. Ely}
}
@article {3438,
	title = {Tree Canopy Biodiversity: Student Reserach Experienced in Great Smoky Mountains National Park},
	journal = {Systematics and Geography of Plants},
	volume = {74},
	year = {2004},
	note = {<p>Illustrations, Maps</p>},
	month = {November},
	pages = {47-65},
	keywords = {All Taxa Biodiversity Inventory, Biodiversity, Forest canopy, Fungi, Lichens, Liverworts, Mosses, Trees},
	author = {Harold W. Keller}
}
@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}
}
@article {3840,
	title = {Vertical Distribution and Assemblages of Corticolous Myxomycetes on Five Tree Species in the Great Smoky Mountains National Park},
	journal = {Mycologia},
	volume = {95},
	year = {2003},
	month = {July-August},
	pages = {565-576},
	keywords = {Ecology, Forest canopy, Slime molds, Trees -- Decay},
	author = {Snell, Kenneth L. and Harold W. Keller}
}
@article {3437,
	title = {Trees of Great Smokies Provide Mountains of Opportunity for Student Reserachers},
	journal = {ATBI Quarterly},
	volume = {1},
	year = {2000},
	note = {Illustrations},
	pages = {10-11},
	keywords = {All Taxa Biodiversity Inventory, Forest canopy, Trees -- Classification and description},
	url = {http://www.discoverlife.org/pa/pu/ATBI_Quarterly/atbi_quarterly_fall_2000.pdf},
	author = {Harold W. Keller}
}
