@article{1077491734, author = {Eaton, J. E.}, title = {Theory of cogroups}, journal = {Duke Math. J.}, volume = {6}, number = {1}, year = {1940}, pages = { 101-107}, language = {en}, url = {http://dml.mathdoc.fr/item/1077491734} }
Eaton, J. E. Theory of cogroups. Duke Math. J., Tome 6 (1940) no. 1, pp. 101-107. http://gdmltest.u-ga.fr/item/1077491734/