1. Abrams, S. M. 1985. Mixed feeds. Page 56 in Near infrared reflectance spectroscopy (NIRS): analysis of forage quality. G. C. Marten, J. S. Shenk, and F. E. Barton, II, ed. USDA, Agric. Handbook No. 643.
2. Biological validation of mineral concentrations shown in NIRS;Adams,1985
3. Goering, H. K., and P. J. Van Soest. 1970. Forage fiber analysis (apparatus, reagents, procedures and some applications). USDA, ARS, Agric. Handbook No. 379.
4. Modification of the neutral detergent fiber procedure for hays;Golding;J. Dairy Sci.,1985
5. Martin, N. P., and J. G. Linn. 1985. Extension applications in NIRS technology transfer. Page 50 in Near infrared reflectance spectroscopy (NIRS): analysis of forage quality. G. C. Marten, J. S. Shenk and F. E. Barton, II, ed. USDA, Agric. Handbook No. 643.