Pypker, T. G.; Barnard, H. R.; Hauck, M.; Sulzman, E. W.; Unsworth, M. H.; Mix, A. C.; Kennedy, A. M.; Bond, B. J. 2009. Can carbon isotopes be used to predict watershed-scale transpiration? Water Resources Research. 45(W00D35): doi:https://doi.org/10.1029/2008WR007050.