TY - JOUR AU - Gene H. Golub AU - Urs von Matt TI - Quadratically constrained least squares and quadratic problems. JO - Numerische Mathematik PY - 1991 SP - 561 EP - 580 VL - 59 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NUMA_1991__59_8_133565/ ID - NUMA_1991__59_8_133565 ER -