Dalpasquale, M.; de Andrade, T. M.; Parabocz, C. R. B.; Anaissi, F. J. Influence of the Calcination Temperature on the Colorimetric Properties of Co, Fe and Ni Aluminates in Solid State Reactions Aided by Citrus Pectin. Orbital: Electron. J. Chem. 2018, 10, 191-199.