1. Arndt U, Seufert G, Nobel W (1982) Die beteiligung von ozon an der komplexkrankheit der Tanne (Abies
alba Mill.) — eine prufenswerte hypothese. Staub-Reinhalt Luft 42: 243–247
2. Axelrod MC, Coyne PI, Bingham GE, Kercher JR, Miller PR, and Hung RC (1980) Canopy analysis of pollutant injured ponderosa pine in the San Bernardino National Forest. In: Miller PR (ed) Proc. Symposium effects of air pollutants on mediterranean and temperate forest ecosystems, USDA, Forest Service, PSW, Gen. Tech. Rpt. PSW 43, p 256
3. Berry CR (1964) Differences in concentrations of surface oxidant between Valley and mountaintop conditions in the southern Appalachians. J Air Pollut Contr Assoc 14: 238–239
4. Bravo H (personal communication). Dep. Contaminacion Ambiental, Centro de Ciencias de la Atmosfera, Cd. Universitaria, Mexico, D.F., Mexico
5. Coyne PI, Bingham GE (1981) Comparative dose response of gas exchange in a ponderosa pine stand exposed to long-term fumigations. J Air Pollut Contr Assoc 31: 38–41