Plant Ecology, Herbivory, and Human Impact in Nordic Mountain Birch Forests - Caldwell, M. M.; Heldmaier, G.; Jackson, R. B.; Lange, O. L.; Mooney, H. A.; Schulze, E. -D; Sommer, U.; Wielgolaski, Frans E.; Karlsson, P. Staffan; Neuvonen, Seppo; Thannheiser, Dietbert (Springer Berlin Heidelberg, 2005)