1. Cartwright, T. C., Ellis, G. F., Jr, Kruse, W. E. & Crouch, E. K. (1964). Texas Agricultural Experimental Station. Monograph 1.
2. Cundiff, L. V., Gregory, K. E. & Koch, R. M. (1974).Journal of Animal Science,38, 711–727.
3. Cundiff, L. V., Gregory, K. E., Schwulst, F. J. & Koch, R. M. (1974).Journal of Animal Science,38, 728–745.
4. Cundiff, L. V., Gregory, K. E. & Koch, R. M. (1982). Selection for increased surivival from birth to weaning. Proceedings 2nd World Congress on Genetics Applied to Livestock Production, V, pp. 310–337.
5. Gregory, K. E. & Cundiff, L. V. (1980).Journal of Animal Science,51, 1224–1242.