1. Epidemiological observations of coccidiosis in suckler calves in France;Mage,1989
2. Staschen S. Kontrolle einer natürlichen Kälberkokzidiose. Vet-MedReport extra edition V3, 2-2 (2004).
3. Some pathophysiological changes associated with infection of Eimeria zuernii in calves;Stockdale;Can J Comp Med,1981
4. Intestinal coccidiosis in cattle;Ernst;Vet Clin North Am Food Anim Pract,1986
5. Diagnose von Helminthosen durch koproskopische Untersuchung;Thienpont,1990