1. SPECTROPHOTOMETRIC AND PAPER ELECTROPHORETIC STUDIES OF THE COPPER (II) POLYOXOTUNGSTOBISMUTHATE COMPLEXES. Authors: DAN RUSU, CRISTINA ROŞU, MARIANA RUSU, GHEORGHE MARCU.2. CHEMICALLY MODIFIED BASIC ALUMINA N FOR TLC. SYNTHESIS, CHARACTERIZATION AND APPLICATIONS. Authors: MIUŢA FILIP, VIRGINIA COMAN, RODICA GRECU , CHRISTOPH MEYER, ZAHARIE MOLDOVAN, GHEORGHE MARCU.