@Article{bg-6-1139-2009,
AUTHOR = {Hofmann, A. and Heim, A. and Gioacchini, P. and Miltner, A. and Gehre, M. and Schmidt, M. W. I.},
TITLE = {Mineral fertilization did not affect decay of old lignin and SOC in a $^{13}$C-labeled arable soil over 36 years},
JOURNAL = {Biogeosciences},
VOLUME = {6},
YEAR = {2009},
NUMBER = {7},
PAGES = {1139--1148},
URL = {http://www.biogeosciences.net/6/1139/2009/},
DOI = {10.5194/bg-6-1139-2009}
}