1. Effects of endometrial biopsy, uterine culture, and cervical dilatation on equine estrous cycle;Hurtgen;J. Am. Vet. Med. Assoc.,1978
2. The effect of intrauterine and cervical manipulation on the equine oestrous cycle and hormone profiles;Hurtgen;J. Reprod. Fertil. Suppl.,1979
3. Influence of intrauterine saline infusion upon the oestrous cycle of the mare;Arthur;J. Reprod. Fertil. Suppl.,1975
4. Hurtgen JP. Alterations of the equine, estrous cycle following uterine and/or cervical manipulations. In: Proceedings of the 21st Ann. Conv. AAEP; 1975, p. 368–77.
5. Effect of pregnancy and collection technique on prostaglandin F in the uterine lumen of Pony mares;Berglund;J. Reprod. Fertil. Suppl.,1982