@article{NUMA_1968__11_131838,
     author = {A. BODE},
     title = {Matrizielle untere {Schranken} linearer {Abbildungen} und {M-Matrizen.}},
     journal = {Numerische Mathematik},
     pages = {405--412},
     publisher = {mathdoc},
     volume = {11},
     year = {1968},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1968__11_131838/}
}