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2. Effects of Nitrogen Deposition on Forests and Peatlands: A Literature Review and Discussion of the Potential Impacts of Nitrogen Deposition in the Alberta Oils Sands Region;Allen,2004
3. Estimating the uptake of traffic-derived NO2 from 15N abundance in Norway spruce needles;Ammann;Oecologia,1999
4. Interaction between sulfur dioxide and nitrate in some lichens;Balaguer;Environ. Exp. Bot.,1991
5. Accumulation of inorganic contaminants;Bargagli,2002