1. Equine twin placentation;Errinton;Cornell Vet.,1942
2. Twinning as a cause of foetal and neonatal loss in the Thoroughbred mare;Jeffcott;J. comp. Pathol.,1973
3. Ultrasound guided fetal cardiac puncture: a method of twin reduction in the mare;Rantanen;Proc. Ann. conv. Am. Ass. equine Pract.,1988
4. Twin pregnancy in a mare: a live foal and a mummified fetus;Roberts;Cornell Vet.,1978