1. SPECTROSCOPICAL CHARACTERISATION OF PRECURSORS FOR CALCIUM HYDROXIDE SYNTHESIS. Authors: CRINA DAN, ELISABETH-JEANNE POPOVICI, LAURA UNGUR, LIGIA PASCU, CRISTINA CIOCAN, R. GRECU.2. CHARACTERISATION OF OXIDIC MATERIALS WITH LUMINESCENT PROPERTIES. Authors: LAURA UNGUR, ELISABETH-JEANNE POPOVICI, MARIA VĂDAN, LIGIA PASCU, MARILENA VASILESCU, M. NAZAROV.