1. AOAC, 1984. Official Methods of Analysis, 14th Edition. Association of Official Analytical Chemists, Arlington, VA, pp. 129–130.
2. ASTM, 1980. Standard Test method D2968: Medullation and Kemp Fibers in Wool and Other Animal Fibers. Annual Book of the American Society for Testing and Materials Standards. Philadelphia, PA.
3. ASTM, 1988. D584-90. Standard Test Method for Wool Content of Raw Wool-Laboratory Scale. Annual Book of ASTM Standards, Method D2720-77. Philadelphia, PA.
4. Basset, J.W., 1986. Kemp fiber measurements. Texas Agric. Exp. Sta. Rep. 4402, pp. 59–67.
5. Black, J.L., Reis, P.J., 1979. Speculation on the control of nutrient partition between wool growth and other body functions. In: Black, J.L., Reis, P.J. (Eds.), Physiological and Environmental Limitations to Wool Growth. University of New England Publishing Unit, Armidale, NSW, Australia, pp. 269–294.