@article{MAN_1951__124_160266,
     author = {H. Hadwiger},
     title = {Einfache {Herleitung} der isoperimetrischen {Ungleichung} f\"ur abgeschlossene {Punktmengen.}},
     journal = {Mathematische Annalen},
     pages = {158--160},
     publisher = {mathdoc},
     volume = {124},
     year = {1951},
     zbl = {0048.40603},
     url = {http://geodesic.mathdoc.fr/item/MAN_1951__124_160266/}
}