1. Herd mating activity in cattle;Mattner;J. Reprod. & Fert.,1974
2. Studies on the social and sexual behaviour of bulls;Blockey,1975
3. Reproductive efficiency of bulls in natural service: Effects of male to female ratio and single- vs multiple-sire breeding groups;Rupp;J. Amer. Vet. Med. Assoc.,1977
4. Beef bulls mated to estrus synchronized heifers: Single- vs multi-sire breeding groups;Farin;Theriogenology,1982
5. Breeding soundness evaluation in bulls,1976