Fichtner, S. S., A. N. de Paula, E. C. Jardim, E. C. da Silva, and H. O. da silva Lopes. “MINERAL COMPOSITION OF SOILS, FORAGE AND ANIMAL TISSUE IN THE RIO VERDE REGION, GOIÁS, BRAZIL: COOPER, MOLYBDENIUM AND SELENIUM”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 20, no. 1, Dec. 2007, pp. 1-6, https://revistas.ufg.br/pat/article/view/2582.