@article{1077475903,
author = {Court, N. A.},
title = {Semi-inverse tetrahedrons},
journal = {Duke Math. J.},
volume = {17},
number = {1},
year = {1950},
pages = { 75-81},
language = {en},
url = {http://dml.mathdoc.fr/item/1077475903}
}
Court, N. A. Semi-inverse tetrahedrons. Duke Math. J., Tome 17 (1950) no. 1, pp. 75-81. http://gdmltest.u-ga.fr/item/1077475903/