1. Normal postpartum involution of the uterus in the dog;Albassam;Can. J. Comp. Med.,1981
2. Detection of pregnancy in the bitch: A study of abdominal palpation. A-mode ultrasound and Doppler ultrasound techniques;Allen;J. Small Anim. Pract,1981
3. Reproduction;Andersen,1970
4. The Ovary and Reproductive Cycle of the Dog (Beagle);Andersen,1973
5. Veterinary Reproduction and Obstetrics (Theriogenology);Arthur,1984