1. Simultaneous nitric acid, particulate nitrate and acidity measurements in ambient air;Appel;Atmospheric Environment,1980
2. Southern California Air Quality Study Suggested Program Plan;Blumenthal,1986
3. On the relationship between sulfate air quality and visibility with examples in Los Angeles;Cass;Atmospheric Environment,1979
4. Southern California Air Quality Study B—Site Operations;Chan,1989
5. A multi-component size-classifying aerosol and gas sampler for ambient air monitoring;Fitz;Air and Waste Management Association paper 89 – 140.1,1989