1. VALIDATION OF A METHOD FOR DETERMINATION OF FREE GLYCEROL IN BIODIESEL. Authors: MARIA-ALEXANDRA HOAGHIA, MELINDA KOVACS, MARIN SENILA, OANA CADAR, MIRELA MICLEAN, LACRIMIOARA SENILA.2. GC-MS ANALYSIS OF SOME PLASTIC COMPONENTS FROM 1997-2003 COMPUTER MAIN BOARDS . Authors: DALMA KOVACS, DORINA SIMEDRU, MELINDA KOVACS.