1. Mare madness;McDonnell;The Horse Interactive,2000
2. Estrous cycle-related performance problems;McDonnell;J Equine Vet Sci,1997
3. Effect of an oral progestin on the estrous cycle and fertility of mares;Squires;J Anim Sci,1979
4. Estrus control in horses with a progestin;Webel;J Anim Sci,1975
5. The effect of altrenogest, an oral progestin, on hematologic and biochemical parameters in mares;Shidler;Vet Hum Toxicol,1983