@article{GDZPPN002349841,
title = {Convex Bodies and Convexity on Grassmann Cones XI. Sublinear Functions.},
journal = {Mathematica Scandinavica},
volume = {24},
year = {1969},
pages = {93-101},
zbl = {0185.50102},
url = {http://dml.mathdoc.fr/item/GDZPPN002349841}
}
Busemann, Herbert. Convex Bodies and Convexity on Grassmann Cones XI. Sublinear Functions.. Mathematica Scandinavica, Tome 24 (1969) pp. 93-101. http://gdmltest.u-ga.fr/item/GDZPPN002349841/