1. Application of Electroejaculation Technique to the Bull;Dziuk;J. Dairy Sci.,1953
2. Howell's Textbook of Physiology;Fulton,1946
3. Fertility in Sheep: Artificial Production of Seminal Ejaculation and the Characters of the Spermatozoa Contained Therein. Coun.;Gunn;Sci. Ind. Research, Australia, Bull,1936
4. Observations on the Sexual Behavior and Semen Production of Dairy Bulls;Hale;J. Dairy Sci.,1953
5. La pratique de 1’electroejaculation chez le Taureau;Laplaud,1948