D. Nelson Hyder, Conrad, C. E., Tueller, P. T., Calvin, L. D., Poulton, C. E., and Sneva, F. A.,
“Frequency Sampling in Sagebrush-Bunchgrass Vegetation”,
Ecology, vol. 44, no. 4, pp. 740 - 746, 1963.
D. Nelson Hyder, Booster, D. E., Sneva, F. A., Sawyer, W. A., and Rodgers, J. B.,
“Wheel-Track Planting on Sagebrush-Bunchgrass Range”,
Journal of Range Management, vol. 14, no. 4, p. 220, 1961.