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2. Bull and Line Differences in the Survival of Spermatozoa After Freezing and Thawing;Buch;J. Dairy Sci.,1956
3. Multiple Range and Multiple F Tests;Duncan;Biometrics,1955
4. A Study of Variations in the Numbers of Live Sperm Surviving Freezing and Six Months Storage at − 79° C. Illrd Intern. Congr. Animal Production;Dunn;Artificial Insemination,1956
5. A Comparison of Fertility of Bovine Spermatozoa Stored at 5° C. and −79° C;Dunn;J. Dairy Sci.,1954