@article{JCA_2003_10_1_JCA_2003_10_1_a5,
     author = {L. M. Grana Drummond and A. N. Iusem},
     title = {First {Order} {Conditions} for {Ideal} {Minimization} of {Matrix-Valued} {Problems}},
     journal = {Journal of convex analysis},
     pages = {129--147},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/JCA_2003_10_1_JCA_2003_10_1_a5/}
}