Pereira, Camila Corrêa, et al. “Determination of Mn E Zn by FAAS After Treatment in Micro-Scale of the Mixed Oxides for Their Characterization”. Semina: Ciências Exatas E Tecnológicas, vol. 38, no. 1, Oct. 2017, pp. 21-30, doi:10.5433/1679-0375.2017v38n1p21.