1. Fertilizing potential in vitro of semen from young beef bulls containing a high or low percentage of sperm with proximal droplets;Amann;Theriogenology,2000
2. The proportion of beef bulls in Western Canada with mature spermiograms at 11 to 15 month of age;Arteaga;Can. Vet. J.,2001
3. Abnormal Morphology of Bovine Spermatozoa;Barth,1989
4. Effect of narrow sperm head shape on fertility in cattle;Barth;Can. Vet. J.,1992
5. The ultra structure of some characteristics sperm defects and a proposal for a new classification of the bull spermiogram;Blom,1972