1. HarveyC.E., EmilyP.P.: Small Animal Dentistry. St.Louis: Mosby-Year Book, 89–93, 1993.
2. Reduction in Accumulation of Plaque, Stain, and Calculus in Dogs by Dietary Means
3. NevilleB.W., DammD.D.: Color Atlas of Clinical Oral Pathology. Philadelphia, Lea & Febiger, 80, 1991.
4. KerteszP.: Veterinary Dentistry & Oral Surgery. London: Wolfe, 73, 1993.