@article {31782,
	title = {A review of bird migration patterns and techniques for monitoring migration},
	volume = {Professional Paper 1981-2},
	year = {1979},
	pages = {35},
	institution = {Syncrude Canada Ltd.},
	address = {Edmonton, AB},
	author = {Yonge, Keith S. and Christiansen, M. L.}
}
