Search for: [References = "21. FOWLER D., CAPE J.N., COYLE M., FLECHARD C., KUYLENSTIERNA J., HICKS K., DERWENT D., JOHNSON C., STEVENSON D., 1999. The global exposure of forests to air pollution. Water, Air, \& Soil Pollution, vol. 116, iss. 1\-2, pp. 5\-32."]