@article{MOMA_1972__76_177604,
     author = {Harald K. Wimmer},
     title = {\"Uber {Matrizen} mit semidefinitem {Realteil.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {276--281},
     publisher = {mathdoc},
     volume = {76},
     year = {1972},
     zbl = {0246.15025},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1972__76_177604/}
}