@mastersthesis {11844,
	title = {The Interrelationship of Visibility Degradation, Ozone, and Sulfur Dioxide in National Park Areas and their Spatial-temporal Distribution Patterns},
	volume = {Master of Science},
	year = {1979},
	pages = {226},
	school = {Virginia Polytechnic Institute and State University},
	keywords = {Air quality, Ozone},
	author = {L{\"u}bkert, Barbara}
}
@conference {11849,
	title = {Spatial and Temporal Ozone and Sulfur Dioxide Distribution in the Great Smoky Mountains},
	booktitle = {72nd Annual Meeting Air Pollution Control Association},
	year = {1979},
	pages = {52},
	address = {Cincinnati, Ohio, June 24-29, 1979},
	keywords = {Air quality, Ozone},
	author = {Stephens, N. Thomas and Rosenquest, J. M and L{\"u}bkert, Barbara}
}
