1. SYNTHESIS AND SPECTROSCOPIC INVESTIGATION OF METAL COMPLEXES WITH AN AZO-DYE AS LIGAND. Authors: CARMEN BÂTIU, IOAN PANEA, MIRELA PELEA, ANCA MARCU, LEONTIN DAVID.2. THE COMPARATIVE STUDY OF THE INFLUENCES OF THE EXTERNAL FACTORS ON THE UV-VIS ABSORPTION SPECTRA OF SOME POTENTIALLY TAUTOMERIC AZOCOUPLING PRODUCTS. Authors: IOAN PANEA, MIRELA PELEA, LUMINIŢA SILAGHI-DUMITRESCU, IOAN BÂLDEA, MARIA COROŞ.