Ribeiro, L. A. O.; Rodrigues, N. C.; Smiderle, W. A. Chronic Copper Poisoning in Sheep Grazed under Grape Orchard Fertilise With Poultry Litter. Braz. J. Vet. Res. Anim. Sci. 2007, 44 (3), 208-211. https://doi.org/10.11606/issn.1678-4456.bjvras.2007.26640.