TY - JOUR AU - L. M. Grana Drummond AU - A. N. Iusem TI - First Order Conditions for Ideal Minimization of Matrix-Valued Problems JO - Journal of convex analysis PY - 2003 SP - 129 EP - 147 VL - 10 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCA_2003_10_1_JCA_2003_10_1_a5/ ID - JCA_2003_10_1_JCA_2003_10_1_a5 ER -