@Article{bg-1-123-2004,
AUTHOR = {Keppler, F. and Kalin, R. M. and Harper, D. B. and McRoberts, W. C. and Hamilton, J. T. G.},
TITLE = {Carbon isotope anomaly in the major plant C$_{1}$ pool and its global biogeochemical implications},
JOURNAL = {Biogeosciences},
VOLUME = {1},
YEAR = {2004},
NUMBER = {2},
PAGES = {123--131},
URL = {http://www.biogeosciences.net/1/123/2004/},
DOI = {10.5194/bg-1-123-2004}
}