%0 Journal Article %A Pham Dinh Tao %A Le Thi Hoai An %T Lagrangian Stability and Global Optimality in Nonconvex Quadratic Minimization over Euclidean Balls and Spheres %J Journal of convex analysis %D 1995 %P 263-276 %V 2 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_1995_2_1-2_a16/ %F JCA_1995_2_1-2_a16