Griffis, T.J., Sargent, S.D., Baker, J.M., Lee, X., Tanner, B.D., Greene, J., Swaitek, E., Billmark, K. “Direct Measurement of Biosphere-Atmosphere Isotopic CO2 Exchange Using the Eddy Covariance Technique.”
Journal of Geophysical Research 113 (2008). DOI:
10.1029/2007JD009297