Cellulose concentration obtained from the Van Soest reference analyses, predicted using a Near Infra Red Spectroscopy (NIRS) calibration and calculated in reference to the Cell Wall Residue (CWR) content (estimated through the Neutral Detergent Fiber, NDF). The NIRS calibration information has to be provided. Method abbreviation: VSCellNDFNIRS. Van Soest method using NIRS calibration for cellulose determination in the NDF - Computation scale_of variable_of method_of acronym attribute entity