1. Aschbacher, P.W., Thacker, E. J., Rumsey, T. S.: Metabolic fate of diethylstilbestrol implanted in the ear of steers. J. Animal Sci. 40, 530 (1975)
2. Brethour, J.R., Duitsman, W.W.: Calfhood stilbestrol implants for creepfed steer calves. Kans. Agr. Exptl. Sta. Bull. 459, 29 (1963)
3. Carrol, F.D., Rollins, W.C., Wagon, K.A., Loy, R.G.: Comparison of beef from bulls and DES implanted steers. J. Animal Sci. 41, 1008 (1975)
4. Embry, L.B., Swan, W.S.: Diethylstilbestrol, zeranol or synovex-S implants for finishing steers. S. Dak. Exptl. Sta. 19 th Ann. Cattle Feeders Day, pp. 13 (1975)
5. State Feeders Day Report;GA Greathouse,1974