(1)
Fukushima, R. S.; Rosa, A. J. de M.; de Lima, C. G.; da Cunha, J. A. Comparison Between Two Analytical Methods for Determining Lignin Concentration of Some Grass Forages. PAB 1999, 34 (6), 1025-1030. https://doi.org/10.1590/S1678-3921.pab1999.v34.5283.