M. Mc Innis, Larson, L. L., and Miller, R. F.,
“Nutrient Composition of Whitetop”,
Journal of Range Management, vol. 46, no. 3, p. 227, 1993.
R. F. Angell, Miller, R. F., and Haferkamp, M. Roy,
“Variability of Crude Protein in Crested Wheatgrass at Defined Stages of Phenology”,
Journal of Range Management, vol. 43, no. 3, p. 186, 1990.