@article{00823384,
title = {Lagrangian stability and global optimality in nonconvex quadratic minimization over Euclidean balls and spheres.},
journal = {Journal of Convex Analysis},
volume = {2},
year = {1995},
pages = {263-276},
zbl = {0848.49022},
language = {en},
url = {http://dml.mathdoc.fr/item/00823384}
}
Pham Dinh Tao; Le Thi Hoai An. Lagrangian stability and global optimality in nonconvex quadratic minimization over Euclidean balls and spheres.. Journal of Convex Analysis, Tome 2 (1995) pp. 263-276. http://gdmltest.u-ga.fr/item/00823384/