@article{1102868245,
author = {Sierksma, Gerard},
title = {Carath\'eodory and Helly-numbers of convex-product-structures.},
journal = {Pacific J. Math.},
volume = {61},
number = {2},
year = {1975},
pages = { 275-282},
language = {en},
url = {http://dml.mathdoc.fr/item/1102868245}
}
Sierksma, Gerard. Carathéodory and Helly-numbers of convex-product-structures.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 275-282. http://gdmltest.u-ga.fr/item/1102868245/