@article{1102947548, author = {Yale, Keith}, title = {Cocyles with range $\{\pm 1\}$.}, journal = {Pacific J. Math.}, volume = {49}, number = {2}, year = {1973}, pages = { 693-697}, language = {en}, url = {http://dml.mathdoc.fr/item/1102947548} }
Yale, Keith. Cocyles with range $\{\pm 1\}$.. Pacific J. Math., Tome 49 (1973) no. 2, pp. 693-697. http://gdmltest.u-ga.fr/item/1102947548/