1. A simple method for recording the electrocardiogram and heart rate from conscious animals;Farmer;Br. J. Pharmac. Chemother.,1968
2. Unipolar Lead Electrocardiography and Vectocardiography;Goldberger,1953
3. Clinical relevancy of heart rate in the dog;Hamlin;J. Am. vet. med. Ass.,1967
4. The electrocardiogram of the normal dog;Horwitz,1953
5. Variations in contour of the records found in serial electrocardiograms of the dog;Katz,1934