1. ON A FREDHOLM-VOLTERRA INTEGRAL EQUATION. Authors: ALEXANDRU-DARIUS FILIP, IOAN RUS.2. THE EVOLUTION OF CLUJ FORTRESS FROM EXTRAMUROS AREA AND THE IMPRINT OF THE GEOSITE IN THE GEOGRAPHICAL LANDSCAPE OF CLUJ-NAPOCA CITY. Authors: PAULA CODREA, IOAN RUS, IOAN-AUREL IRIMUȘ, RAULARIAN RUSU.