@ARTICLE {DIELS:2004, title = {Long-term soil organic carbon dynamics in a subhumid tropical climate: 13C data in mixed C3/C4 cropping and modeling with ROTHC}, author = {Diels, J. and Vanlauwe, B. and van der Meersch, M. and Sanginga, P. and Merckx, R. }, journal = {Soil Biology and Biochemistry}, year = {2004}, volume = {36}, pages = {1739--1750}, issn = {0038-0717}, }