Zimmermann, R. Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;
http://dx.doi.org/10.1093/treephys/25.5.545 (Publisher version)
Kubota, M., Tenhunen, J., Zimmermann, R., Schmidt, M., Adiku, S., & Kakubari, Y. (2005). Influences of environmental factors on the radial profile of sap flux density in Fagus crenata growing at different elevations in the Naeba Mountains, Japan. Tree Physiology, 25(5), 545-556. doi:10.1093/treephys/25.5.545.