1. STRUCTURAL INVESTIGATIONS OF AG2O-B2O3-CAO-P2O5 GLASS AND GLASS-CERAMIC SYSTEM. Authors: VIORICA SIMON, NICOLAE LEOPOLD, GHEORGHE BORODI, IOAN BRATU, RĂZVAN ŞTEFAN.2. VIBRATIONAL FEATURES OF DIPHENYLHYDANTOIN. Authors: RALUCA LUCHIAN, ZSUZSANNA BORSAY, DANA MANIU, NICOLAE LEOPOLD, VASILE CHIŞ.