1. Reproductive biology of the mare;Ginther,1979
2. Twinning as a cause of neonatal loss in the Thoroughbred;Jeffcott;J Comp Pathol,1973
3. Physiology of the gestational period;Roberts,1986
4. Causes of abortion, stillbirth, and prenatal death in horses;Giles;J Am Vet Med Assoc,1993
5. Methods for the treatment of twin pregnancy in the mare;Pascoe;Equine Vet J,1983