1. Brum, E. W. 1963. Some Effects of Low Levels of Inbreeding Resulting from a Specific Line Development Mating System on Growth and Production Characteristics in Dairy Cattle. Unpublished Ph.D. thesis, Ohio State University.
2. Genetic Considerations in Breeding Two Million Cattle to Two Hundred Sires. Privately printed,,1959
3. Effect of Specific Combining Ability (Nicking) and Inbreeding on the Yield of Milk in Dairy Cows;Hansson;Kungl. Lantbrukshögskolans Annaler,1961
4. Effects of Inbreeding and Selection in a Closed Guernsey Herd;Hillers;J. Dairy Sci.,1964
5. The Organization of Dairy Herd Improvement Under Artificial Insemination;Johansson;Tijdschr. Diergeneesk.,1961