Temperton, V. M. Research Group Biodiversity Ecosystem, Dr. N. Buchmann, Max Planck Institute for Biogeochemistry, Max Planck Society;
http://dx.doi.org/10.1093/treephys/23.15.1051 (Publisher version)
Temperton, V. M., Grayston, S. J., Jackson, G., Barton, C. V. M., Millard, P., & Jarvis, P. G. (2003). Effects of elevated carbon dioxide concentration on growth and nitrogen fixation in Alnus glutinosa in a long-term field experiment. Tree Physiology, 23(15), 1051-1059. doi:10.1093/treephys/23.15.1051.