J.G. Hubbell
Lovett, Gary M., and J.G. Hubbell. 1991. “Effects Of Ozone And Acid Mist On Foliar Leaching From Eastern White Pine And Sugar Maple”. Can. J. For. Res. 21: 794-802.
Hubbell, J.G., and Gary M. Lovett. 1988. “A Chamber For Ozone Exposure And Misting Of Branches On Mature Trees”. In W. E. Winner And L. B. Phelps (Eds.). Response Of Trees To Air Pollution: The Role Of Branch Studies, 120-129. U.S. Environmental Protection Agency.