C. H. Tokarnia, J. A. Guimarães, C. F. C. Canella, and J. Döbereiner, “Copper and cobalt deficiencies in cattle and sheep in some regions of Brazil”, PAB, vol. 6, no. 1, pp. 61–77, Apr. 2014, doi: 10.1590/S1678-3921.pab1971.v6.17737.