1. Almquist, J. O., Amann, R. P., and Hale, E. B. Measurement of Sperm Production and Its Relation to Sperm Output and Reserves in Dairy Bulls. IVth Intern. Gongr. Animal Reproduction (The Hague) In press.
2. Sperm Reserves of Dairy Bulls as Determined by Depletion Trials and Postslaughter Sperm Counts;Almquist;J. Dairy Sci.,1958
3. Almquist, J. O., and Hale, E. B. An Approach to the Measurement of Sexual Behavior and Semen Production of Dairy Bulls. Illrd Intern. Congr. Animal Reproduction (Cambridge), Plenary Papers: 50. 1956.
4. Amann, R. P. Reproductive Physiology of the Male Bovine. Ph.D. thesis, The Pennsylvania State University, University Park. 1961.
5. Reproductive Capacity of Dairy Bulls. I. Technique for Direct Measurement of Gonadal and Extra-Gonadal Sperm Reserves;Amann;J. Dairy Sci.,1961