@article{NUMA_1966__9_131732,
     author = {M. FIEDLER},
     title = {Matrix {Inequalities.}},
     journal = {Numerische Mathematik},
     pages = {109--119},
     publisher = {mathdoc},
     volume = {9},
     year = {1966},
     zbl = {0148.25903},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1966__9_131732/}
}