GOGA, F.; DUDRIC, R. .; BIZO, L. .; AVRAM, A. .; MĂRINCAŞ, A.-H.; VARHELY Jr., C.; DIPPONG, T. . INFLUENCE OF THE Ni Mg RATIO ON THE COLOUR OF SPINEL PIGMENTS PREPARED BY A MODIFIED SOL – GEL METHOD. Studia UBB Chemia 2017, 62, 261-270.