@article {3662,
	title = {Effect of Ambient NH3 Levels on PM2.5 Composition in the Great Smoky Mountains National Park},
	journal = {Atmospheric Environment},
	volume = {39},
	year = {2005},
	month = {August},
	pages = {4593-4606},
	keywords = {Acid rain, Air quality, Pollution},
	author = {Olszyna, Kenneth J and Bairai, Solomon T and Tanner, Roger L}
}
