@article{1077477042,
author = {Court, N. A.},
title = {Isogonal points for a tetrahedron},
journal = {Duke Math. J.},
volume = {19},
number = {1},
year = {1952},
pages = { 71-74},
language = {en},
url = {http://dml.mathdoc.fr/item/1077477042}
}
Court, N. A. Isogonal points for a tetrahedron. Duke Math. J., Tome 19 (1952) no. 1, pp. 71-74. http://gdmltest.u-ga.fr/item/1077477042/