1. Bull semen collection procedures to maximize output of sperm;Almquist,1978
2. An approach to the measurement of sexual behavior and semen production of dairy bulls;Almquist,1956
3. Sperm production rates;Amann,1970
4. Sexual functions of bulls in relation to heredity, rearing intensity and somatic conditions;Bane;Acta Agric. Scand.,1954
5. Sexual behavior of bulls at pasture. A review;Blockey;Theriogenology,1976