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2. Daughter's maternal grandsires in sire evaluation;Everett;J. Dairy Sci.,1979
3. McDaniel, B. T., R. H. Miller, E. L. Corley, and R. D. Plowman. 1967. DHIA age adjustment factors for standardizing lactations to a mature basis. DHIA Letter 43, No. 1, USDA-ARS 44–188.
4. Predicting daughter milk production from dam index;McGilliard;J. Dairy Sci.,1976
5. Theoretical background for the USDA-DHIA Modified Contemporary Comparison. Sire Summary Procedure;Norman;USDA Production Research Report,1976