DEBRA A. KNIGHT, S. E. WEISBRODE, L. M. SCHMALL, S. M. REED, A. A. GABEL, L. R. BRAMLAGE, W. I. TYZNIK,
The effects of copper supplementation on the prevalence of cartilage lesions in foals. Equine Veterinary Journal. ,vol. 22, pp. 426- 432 ,(1990) ,
10.1111/J.2042-3306.1990.TB04310.X