1. FAO STAT 2003.
2. The phenomenon of foal heat in mares;Mathews;Aust. Vet. J.,1967
3. Uterine involution in mares treated with progesterone and estradioal-17β;Sexton;J. Am. Vet. Med. Assoc.,1985
4. Fertility in mares after disturbed or undisturbed puerperium: evidence from clinical, microbiological and harmne analysis;Glatzel;Berl. Much. Tierarztl. Wochenshr.,1995
5. Histological changes in the uterus during the postpartum in the mare;Gomez cuetara;Anat. Histol. Embryol.,1995