Stiffness of Loaded Face of Steel Rectangular Hollow Section Columns with and without Concrete Infill in Beam-column Endplate Connections. - Boukhalkhal, Said Hicham; Touati Ihaddoudène, Abd Nacer; Da Costa Neves, Luis Filipe; Saidani, Messaoud (Periodica Polytechnica: Civil Engineering, 2024)