@article{1102911792,
author = {Kleinfeld, Erwin},
title = {A generalization of $(-1,\,1)$ rings.},
journal = {Pacific J. Math.},
volume = {55},
number = {2},
year = {1974},
pages = { 195-202},
language = {en},
url = {http://dml.mathdoc.fr/item/1102911792}
}
Kleinfeld, Erwin. A generalization of $(-1,\,1)$ rings.. Pacific J. Math., Tome 55 (1974) no. 2, pp. 195-202. http://gdmltest.u-ga.fr/item/1102911792/