@article {31878,
	title = {Bird deterrent and dispersal systems : research update},
	volume = {Professional Paper 1981-3},
	year = {1979},
	pages = {13},
	institution = {Syncrude Canada Ltd.},
	address = {Edmonton, AB},
	author = {Christiansen, M. L. and Yonge, K. S.}
}
