Seguin, Brad, Harry Momont, and Larry Baumann. 1985. “Cloprostenol and Dinoprost Tromethamine in Experimental and Field Trials Treating Unobserved Estrus in Dairy Cows”. The Bovine Practitioner 1985 (20):85-90. https://doi.org/10.21423/bovine-vol1985no20p85-90.