@article{MS2_1969__24_166082,
     author = {Herbert Busemann},
     title = {Convex {Bodies} and {Convexity} on {Grassmann} {Cones} {XI.} {Sublinear} {Functions.}},
     journal = {Mathematica Scandinavica},
     pages = {93--101},
     publisher = {mathdoc},
     volume = {24},
     year = {1969},
     zbl = {0185.50102},
     url = {http://geodesic.mathdoc.fr/item/MS2_1969__24_166082/}
}