1. SYNTHESIS AND CHARACTERIZATION OF A NEW BISMUTHO(III)POLYOXOMETALATE WITH MIXED ADDENDA. Authors: OANA BABAN, DAN RUSU, ADRIAN PATRUT, CORA CRĂCIUN, MARIANA RUSU.2. SYNTHESIS AND SPECTROSCOPIC INVESTIGATIONS OF NEW UO22+ POLYOXOMETALATE COMPLEXES. Authors: MARIANA RUSU, MIRCEA PUIA, SIMINA DREVE, OANA BABAN, DAN RUSU.3. SPECTROSCOPIC STUDIES OF LACUNARY POLYOXOTUNGSTATES CERIUM (III) COMPLEXES BASED ON α-Β-[ΒiIII W9O33]9- UNITS. Authors: L. DAVID, OANA BABAN, D. RUSU.