William F Barnard Barnard, W. F., Saxena, V. K., Wenny, B. N., & DeLuisi, J. J. (2003). Daily surface UV exposure and its relationship to surface pollutant measurements. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 53(2), 237–245. https://doi.org/10.1080/10473289.2003.10466134 Wenny, B. N., Schafer, J. S., DeLuisi, J. J., Saxena, V. K., Barnard, W. F., Petropavlovskikh, IV, & Vergamini, A. J. (1998). A study of regional aerosol radiative properties and effects on ultraviolet-B radiation. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 103(D14), 17083–17097. https://doi.org/10.1029/98JD01481