%0 Journal Article %A Hamdi, Abdelouahed %A Taati, Akram %A Almaadeed, Temadher A. %T Quadratic problems with two quadratic constraints: convex quadratic relaxation and strong lagrangian duality %J RAIRO. Operations Research %D 2021 %P S2905-S2922 %V 55 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/ro/2020130/ %R 10.1051/ro/2020130 %G en %F RO_2021__55_S1_S2905_0