@article{MOMA_1955__59_176971,
     author = {J. Heinhold},
     title = {Zur {Absch\"atzung} der {Wurzeln} algebraischer {Gleichungen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {203--216},
     publisher = {mathdoc},
     volume = {59},
     year = {1955},
     zbl = {0065.25003},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1955__59_176971/}
}