1. Black's Veterinary Dictionary;Boden,1998
2. Heart rate response to ventricular stimulation;Brembilla;Arch Mal Coeur Vaiss,1996
3. Heart rate variability;Calvert;Vet Clin North Am Small Anim Pract,1998
4. Cardiopulmonary disease;Clutton,1999
5. Differences between breeds of dog in a measure of heart rate variability;Doxey;Vet Rec,2004