@article{1183506773,
author = {DeCicco, John},
title = {The pseudo-angle in space of $2n$ dimensions},
journal = {Bull. Amer. Math. Soc.},
volume = {51},
number = {11},
year = {1945},
pages = { 162-168},
language = {en},
url = {http://dml.mathdoc.fr/item/1183506773}
}
DeCicco, John. The pseudo-angle in space of $2n$ dimensions. Bull. Amer. Math. Soc., Tome 51 (1945) no. 11, pp. 162-168. http://gdmltest.u-ga.fr/item/1183506773/