1. Anderson, R. L., and Bancroft, T. L., 1952: Statistical Theory in Research (McGraw-Hill, New York).
2. Berry, J. C., 1945: Reliability of Averages of Different Numbers of Lactation Records for Comparing Dairy Cows, J. Dairy Sci. 28, 355–366.
3. Comstock, R. E., and Robinson, H. F., 1948: The Components of Genetic Variance in Populations of Biparental Progenies and Their Use in Estimating the Average Degree of Dominance, Biometrics 4, 254–266.
4. Comstock, R. E., Robinson, H. F., and Harvey, P. H., 1949: A Breeding Procedure Designed to Make Maximum Use of Both General and Specific Combining Ability, Agron. J. 41, 360–367.
5. Crow, J. F., 1953a: Theoretical Considerations of Reciprocal Recurrent Selection and Recurrent Selection Compared to Other Breeding Methods, Poultry Breeders Roundtable, Chicago 1953.