1. BOUNDS FOR BLOW-UP TIME IN A SEMILINEAR PARABOLIC PROBLEM WITH VARIABLE EXPONENTS. Authors: BENYATTOU BENABDERRAHMANE, ABITA RAHMOUNE.2. ON A COUPLED SYSTEM OF VISCOELASTIC WAVE EQUATION OF INFINITE MEMORY WITH ACOUSTIC BOUNDARY CONDITIONS. Authors: ABDELAZIZ LIMAM, BENYATTOU BENABDERRAHMANE, YAMNA BOUKHATEM.3. GENERAL DECAY RATES OF THE SOLUTION ENERGY IN A VISCOELASTIC WAVE EQUATION WITH BOUNDARY FEEDBACK AND A NONLINEAR SOURCE. Authors: ISLEM BAAZIZ, BENYATTOU BENABDERRAHMANE, SALAH DRABLA.