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1996.
1997.
“Long-term effects of chronic nitrogen additions on foliar litter decay and humus formation in forest ecosystems”
203: 301-311.
1998.
2000.
2000.
2000.
1998.
“Age structure and radial growth in xeric pine-oak forests in western Great Smoky Mountains National Park”
126: 139-146.
1999.
2000.
1998.
1993.
1997.
2000.
“Effects of CO2 elevation on canopy development in the stands of two co-occcurring annuals”
108: 215-223.
1996.
“Seasonal variation of the ozone production efficiency per unit NOx at Harvard Forest, Massachusetts”
101: 12659-12666.
1996.
2000.
1999.
1997.
1997.
1998.