1. Allen , W. R. 1976 Personal communication
2. A preliminary study upon the use of prostaglandins for inducing oestrus in non-cycling Thoroughbred mares;Allen;Equine vet. J.,1973
3. Foetal losses during pregnancy in the Thoroughbred mare;Bain;N.Z. vet. J.,1969
4. Hughes , J. P. Stabenfeldt , G. H. Evans , J. W. 1972 Clinical and endocrine aspects of the estrous cycle of the mare 18 th Ann. Conv. Am. Ass. equine Pract. 119
5. Twinning as a cause of foetal and neonatal loss in the Thoroughbred mare;Jeffcott;J. comp. Path.,1973