1. STRUCTURAL AND OPTICAL CHARACTERIZATION OF ZnO FILMS DOPED WITH Ni. Authors: A. POP, D. MARCONI, C. LUNG, M. TOMA.2. STUDY OF STRUCTURAL, MORPHOLOGICAL AND ELECTRICAL PROPERTIES IN THE (Bi1.6Pb0.4)(Sr1.8Ba0.2)Ca2(Cu1-xGdx)3Oy SUPERCONDUCTORS. Authors: A. POP, D. MARCONI, C. LUNG.3. RESISTANCE OF HIGH-TC SUPERCONDUCTORS: REVIEW ARTICLE. Authors: A.V. POP, M. POP, D. MARCONI, C. LUNG.4. STRUCTURE AND MORPHOLOGY OF ZnO FILMS CO-DOPED WITH AL AND RARE EARTH DEPOSITED BY SPRAY COATING TECHNIQUE. Authors: M. TOMA, D. MARCONI, C. LUNG, M. POP, A. POP.5. A COMPREHENSIVE REVIEW OF FABRICATION AND CHARACTERIZATION METHODS OF HYDROXYAPATITE. Authors: C. LUNG, D. MARCONI, T. FEHÉR.