Murthy, R., Barron-Gafford, G., Dougherty, P. M., Engel, V. C., Grieve, K., Handley, L., Klimas, C., Potosnak, M. J., Zarnoch, S. J., Zhang, J. (2005). Increased leaf area dominates carbon flux response to elevated CO2 in stands of Populus deltoides (Bartr), Global Change Biology, 11 (5), 716-731