@proceedings {6238,
	title = {Geographic song variation, and differential responses to more or less familiar songs in the blackheaded bunting (<i>Emberiza melanocephala</i>).},
	year = {1986},
	month = {12-15 August 1986},
	pages = {15-17},
	keywords = {kape aves},
	author = {Hansen, P.}
}
