Predicting daily mean soil temperature from daily mean air temperature in four northern hardwood forest stands. Forest Science. 46(2):297-301.. 2000.
Environmental stress effects on vigor, mortality, and growth in northern hardwood forests along a pollution-climate gradient. The Michigan Academician. 30:27-47.. 1998.
Studying the effects of air pollution on forest along exposure gradients: experiences in the United States and opportunities for cooperation. Climate and Atmospheric Deposition Studies in Forests. :109-115.. 1994.
Cation and anion fluxes in northern hardwood throughfall along an acidic deposition gradient. Canadian Journal of Forest Research. 23:457-467.. 1993.
Leaf area and foliar biomass relationships in northern hardwood forests located along an 800 km acid deposition gradient. Forest Science. 37(4):1041-1059.. 1991.
Comparison of cation leaching in five northern hardwood stands along an air pollution gradient using a throughfall modelling approach. IUFRO World Congress Proceedings. :295-306.. 1990.