Hand, Jennifer L., Bret A. Schichtel, William C. Malm, S. Copeland, J. V. Molenar, N. Frank, and Marc L. Pitchford. "Widespread Reductions in Haze across the United States from the Early 1990s through 2011." Atmospheric Environment 94 (2014): 671-679.

Lee, Taehyoung, Xiao Ying Yu, Benjamin Ayres, Sonia M. Kreidenweis, William C. Malm, and Jeffrey L. Collett. "Observations of Fine and Coarse Particle Nitrate at Several Rural Locations in the United States." Atmospheric Environment 42, no. 11 (2008): 2720-2732.

Lee, Taehyoung, Xiao Ying Yu, Sonia M. Kreidenweis, William C. Malm, and Jeffrey L. Collett. "Semi-Continuous Measurement of PM2.5 Ionic Composition at Several Rural Locations in the United States." Atmospheric Environment 42, no. 27 (2008): 6655-6669.

Schichtel, Bret A., William C. Malm, and Marc L. Pitchford. "Critique of "Precipitation in Light Extinction Reconstruction" by P.A. Ryan." Journal of the Air & Waste Management Association 56, no. 5 (2006): 539-546.

Day, Derek E., and William C. Malm. "Aerosol Light Scattering Measurements as a Function of Relative Humidity: A Comparison Between Measurements Made at Three Different Sites." Atmospheric Environment 35, no. 30 (2001): 5169-5176.

Day, Derek E., William C. Malm, and Sonia M. Kreidenweis. "Aerosol Light Scattering Measurements as a Function of Relative Humidity." Journal of the Air & Waste Management Association 50, no. 5 (2000): 710-716.

Patterson, Paul, Hari Iyer, James Sisler, and William C. Malm. "An Analysis of the Yearly Changes in Sulfur Concentrations at Various National Parks in the United States, 1980-1996." Journal of the Air & Waste Management Association 50, no. 5 (2000): 790-801.

Hand, Jennifer L., Roger B. Ames, Sonia M. Kreidenweis, Derek E. Day, and William C. Malm. "Estimates of Particle Hygroscopicity During the Southeastern Aerosol and Visibility Study." Journal of the Air & Waste Management Association 50, no. 5 (2000): 677-685.

Ames, Roger B., Jennifer L. Hand, Sonia M. Kreidenweis, Derek E. Day, and William C. Malm. "Optical Measurements of Aerosol Size Distributions in Great Smoky Mountains National Park: Dry Aerosol Characterization." Journal of the Air & Waste Management Association 50, no. 5 (2000): 665-676.

Day, Derek E., William C. Malm, and Sonia M. Kreidenweis. "Seasonal Variations in Aerosol Composition and Acidity at Shenandoah and Great Smoky Mountains National Parks." Journal of the Air & Waste Management Association 47, no. 3 (1997): 411-418.

Day, Derek E., William C. Malm, and Roger B. Ames. Final Report: Southeastern Aerosol and Visibility Study In SEAVS. Great Smoky Mountains National Park: National Park Service, Electric Power Research Institute, 1995.

Malm, William C.. "Characteristics and Origins of Haze in the Continental United States." Earth-Science Reviews 33, no. 1 (1992): 1-36.