@Article{bgd-3-513-2006,
AUTHOR = {Köhler, P. and Schmitt, J. and Fischer, H.},
TITLE = {On the application and interpretation of Keeling plots in paleo climate research &ndash; deciphering &delta;<sup>13</sup>C of atmospheric CO<sub>2</sub> measured in ice cores},
JOURNAL = {Biogeosciences Discussions},
VOLUME = {3},
YEAR = {2006},
NUMBER = {3},
PAGES = {513--573},
URL = {http://www.biogeosciences-discuss.net/3/513/2006/},
ISSN = {1810-6277}
}