1. The ovarian cycle of the bitch: Plasma estrogen, LH, and progesterone;Cocannon;Biol. Reprod.,1975
2. Arteries and veins of the uterus and ovaries in dogs and cats;Del Campo;Am. J. Vet. Res.,1974
3. An introduction to the study of the oestrus cycle in the dog;Evans;Memoirs. Univ. Calif.,1931
4. Onset of diestrus in the beagle bitch: Definition and significance;Hoist;Am. J. Vet. Res.,1974
5. Circulating hormone levels in the cycling beagle;Masken,1972