Stepwise chemical digestion, near-infrared spectroscopy or total N measurement to take account of decomposability of plant C and N in a mechanistic model
Henriksen, T. M.; Korsaeth, A.; Breland, T. A.; Stenberg, B.; Jensen, L. S.; Bruun, S.; Gudmundsson, J.; Palmason, F.; Pedersen, A.; Salo, T. J. (Elsevier, 2007)