1. Environmental correlation between paternal half-sisters for milk and milk fat production;Arora;J. Dairy Sci.,1971
2. Genetic and environmental factors in dairy sire evaluation: III. Influence of environmental and other extraneous correlations among the daughters;Bereskin;J. Dairy Sci.,1965
3. Butcher, K. R. 1973. Estimating son's progeny test for milk yield from information on his sire, dam, and maternal grandsire. Ph.D. Thesis. North Carolina State University, Raleigh.
4. Cornell University. 1973 (June). Northeast AI sire comparison Dep. Anim. Sci., Ithaca, New York.
5. Estimates of sire-son relationships for yield traits in the five major dairy breeds;Dickinson;J. Dairy Sci.,1969