1. Protozoal abortion in a herd of cattle concurrently infected with Hammondia pardalis;Abbitt;J. Am. Vet. Med. Assoc.,1993
2. Bovine abortions associated with Neospora in Denmark;Agerholm;Acta Vet. Scand.,1994
3. Neospora-like protozoan infection as a major cause of abortion in California dairy cattle;Anderson;J. Am. Vet. Med. Assoc.,1991
4. Epidemiological investigations of bovine protozoal abortion in California dairy herds;Anderson,1992
5. Protozoal causes of reproductive failure in domestic ruminants;Anderson;Vet. Clin. N. Am. Food Anim. Pract.,1994