@article{MOMA_1982__94_178092,
     author = {H. Sies},
     title = {Einige {Eigenschaften} monotoner {Matrizen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {155--162},
     year = {1982},
     volume = {94},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1982__94_178092/}
}