O. G. Chertov, A. S. Kornarov, G. Crocker, P. Grace, J. Klir, M. Körschens, P. R. Poulton, et D. Richter, 1997, “Simulating trends of soil organic carbon in seven long-term experiments using the SOMM model of the humus types,” Geoderma 81:121–135.doi:10.1016/S0016-7061(97)00085-2.
O. G. Chertov, A. S. Kornarov, G. Crocker, P. Grace, J. Klir, M. Körschens, P. R. Poulton, et D. Richter, 1997, “Simulating trends of soil organic carbon in seven long-term experiments using the SOMM model of the humus types,” Geoderma 81:121–135.doi:10.1016/S0016-7061(97)00085-2.
D. C. Whitehead et J. Tinsley (1963), “The biochemistry of humus formation,” Journal of the Science of Food and Agriculture 14(12):849–857. doi:10.1002/jsfa.2740141201. Abstractum.