1. The use of antibiotics in the treatment of low fertility cows;Ulberg;J. Am. Vet. Med. Assoc.,1952
2. An evaluation of uterine infusion for the treatment of infertility in cattle;Roberts;Cornell Vet.,1956
3. Bovine endometritis: A review;Dawson;Brit. Vet. J.,1960
4. Retained fetal membranes: The effect on prolificacy of dairy cattle;Erb;J. Am. Vet. Assoc.,1958
5. Endometritis en vruchtbaarheid het rund;de Bois,1961