Prada, F. et al. 1998. Survey on the mineral elements - copper and molybdenum -in forages from areas of the State of Mato Grosso do Sul, Brazil. Brazilian Journal of Veterinary Research and Animal Science. 35, 6 (Jan. 1998), 275–278. DOI:https://doi.org/10.1590/S1413-95961998000600009.