1. GENERAL STABILIZATION OF A THERMOELASTIC SYSTEMS WITH A BOUNDARY CONTROL OF A MEMORY TYPE. Authors: NESRINE SEMCHEDINE, HAMID BENSERIDI, SALAH DRABLA.2. UNSTEADY FLOW OF BINGHAM FLUID IN A THIN LAYER WITH MIXED BOUNDARY CONDITIONS. Authors: YASSINE LETOUFA, HAMID BENSERIDI, TEDJANI HADJ AMMAR.