Keppler, F. Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;
Keppler, F., Harper, D. B., Kalin, R. M., Meier-Augenstein, W., Farmer, N., Davis, S., et al. (2007). Stable hydrogen isotope ratios of lignin methoxyl groups as a paleoclimate proxy and constraint of the geographical origin of wood. New Phytologist, 176(3), 600-609.