Zucchi, O.L.A.D. et al. 1995. Qualitative and quantitative characterization of elements by X-ray fluorescence technique in mineral supplement for livestock. II. Energy dispersion. Pesquisa Agropecuaria Brasileira. 30, 12 (Dec. 1995), 1441–1452. DOI:https://doi.org/10.1590/S1678-3921.pab1995.v30.4444.