@article{1255380676, author = {Hughes, D. R.}, title = {Generalized incidence matrices over group algebras}, journal = {Illinois J. Math.}, volume = {1}, number = {1}, year = {1957}, pages = { 545-551}, language = {en}, url = {http://dml.mathdoc.fr/item/1255380676} }
Hughes, D. R. Generalized incidence matrices over group algebras. Illinois J. Math., Tome 1 (1957) no. 1, pp. 545-551. http://gdmltest.u-ga.fr/item/1255380676/