S. Watkins, E. Saleh, and P. Waldroup, “Reduction in Dietary Nutrient Density Aids in Utilization of High Protein Cottonseed Meal in Broiler Diets”, Int. J. Poult. Sci., vol. 1, no. 4, pp. 53–58, Jun. 2002, doi: 10.3923/ijps.2002.53.58.