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2. Association of Official Analytical Chemists (AOAC), 1997. AOAC Official Methods of Analysis 16th Edition. Official Method 973.18 Fibre (Acid Detergent) and Lignin in Animal Feed Chapter 4, pp. 28–29.
3. Association of Official Analytical Chemists (AOAC), 2005. AOAC Official Methods of Analysis 18th Edition. Official Method 942.05 Ash of Animal Feed Chapter 4, p. 8.
4. Advances in the understanding of factors influencing the nutritive value of legumes;Beever,1996
5. Effects of differing ratios of corn silage and corn grain on feedlot performance, carcass characteristics and projected economic returns;Brennan;J. Anim. Sci.,1987