@article{GDZPPN002471698,
title = {An Extremal Theorem for N-Simplexes.},
journal = {Monatshefte f\"ur Mathematik},
volume = {59},
year = {1955},
pages = {320-322},
zbl = {0066.14401},
url = {http://dml.mathdoc.fr/item/GDZPPN002471698}
}
Petty, C.M.; Waterman, D. An Extremal Theorem for N-Simplexes.. Monatshefte für Mathematik, Tome 59 (1955) pp. 320-322. http://gdmltest.u-ga.fr/item/GDZPPN002471698/