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.
C. Scott Cooper, Hyder, D. Nelson, Petersen, R. G., and Sneva, F. A.,
“The Constituent Differential Method of Estimating Species Composition in Mixed Hay1”,
Agronomy Journal, vol. 49, no. 4, p. 190, 1957.
D. Nelson Hyder, Sneva, F. A., and Calvin, L. D.,
“Chemical Control of Sagebrush Larkspur”,
Journal of Range Management, vol. 9, no. 4, p. 184, 1956.