@TechReport{ETHAN_the_Evolutionary_Trees_and_Natural_History_Ontology,
	author = "Cynthia Parr, Joel Sachs, Andriy Parafiynyk, Taowei Wang, Roger Espinosa, and Tim Finin",
	title = "{ETHAN: the Evolutionary Trees and Natural History Ontology}",
	month = "November",
	year = "2006",
	organization = "Computer Science and Electrical Engineering",
	series = "technical report",
	booktitle = "TR-EBQ-320-2006",
	institution = "University of Maryland, Baltimore County",
}