@article {46822,
	title = {Ambient air quality trends in west central airshed society zone : Final report},
	year = {2006},
	institution = {University of Alberta, Department of Civil and Environmental Engineering},
	url = {http://www.wcas.ca/documents/WCAS_trend_study2.pdf},
	author = {Kindzierski, W. B. and El-Din, M. G. and Haque, N.}
}
