1. The use of endometrial biopsy in the infertile mare;Doig;Can. vet. J.,1981
2. Endometrial biopsy as an aid to diagnosis and prognosis in equine infertility;Gordon;J. Equine Med. Surg.,1978
3. Evaluation of the reproductive status of non-pregnant mares;Greenhof;J. Am. vet. med. Ass.,1975
4. An assessment of wastage in Thoroughbred racing from conception to 4 years of age;Jeffcott;Equine vet. J.,1982