1. SALT STRESS TOLERANCE OF A FRESHWATER GREEN ALGA UNDER DIFFERENT PHOTON FLUX DENSITIES. Authors: LASZLO FODORPATAKI, CSABA BARTHA.2. THE ATTENTION CAPABILITIES OF FOOTBALL REFEREES AS DETERMINED BY PIERON’S TEST. Authors: SÁNDOR PUHL, PÁL HAMAR, CSABA BARTHA, KINGA MAJOROSS.3. DIELECTRIC BEHAVIOR OF SLUDGE FROM WASTEWATER TREATMENT. Authors: CSABA BARTHA, ALINA CARAMITU, MONICA JIPA, DANIELA MARIA IGNAT, ATTILA TÓKOS.4. BEHAVIOR IN AC POLARIZATION OF HIGH-SILICON CAST IRONS. Authors: CSABA BARTHA, VIRGIL MARINESCU, MONICA JIPA, BEATRICE-GABRIELA SBARCEA, ATTILA TÓKOS, ALINA-RUXANDRA CARAMITU, IOSIF LINGVAY.