@article {52705,
	title = {Investigation of air quality data: Application of polar coordinate representations},
	volume = {5},
	year = {1989},
	pages = {6 pages },
	publisher = {AOSTRA Journal of Research},
	keywords = {air emissions, climate, Syncrude, weather},
	author = {Denney, D. W. and Hoyle, R. E. and Liu, J. K.}
}
