@article{MOMA_1975__79_177690,
     author = {H. Hadwiger},
     title = {Das {Will'sche} {Funktional..}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {213--222},
     publisher = {mathdoc},
     volume = {79},
     year = {1975},
     zbl = {0305.52007},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1975__79_177690/}
}