@article{GDZPPN002291851,
title = {Convex Bodies and Convexity on Grassmann Cones.},
journal = {Mathematische Annalen},
volume = {152},
year = {1963},
pages = {1-41},
zbl = {0112.37301},
url = {http://dml.mathdoc.fr/item/GDZPPN002291851}
}
Busemann, H.; Ewald, G.; SHEPHARD, G.C. Convex Bodies and Convexity on Grassmann Cones.. Mathematische Annalen, Tome 152 (1963) pp. 1-41. http://gdmltest.u-ga.fr/item/GDZPPN002291851/