Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1958__17_4_114807, author = {Halpern, Edward}, title = {On the structure of hyperalgebras. {Class} 1 {Hopf} algebras}, journal = {Portugaliae mathematica}, pages = {127--147}, publisher = {mathdoc}, volume = {17}, number = {4}, year = {1958}, mrnumber = {0111023}, zbl = {0095.02505}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1958__17_4_114807/} }
Halpern, Edward. On the structure of hyperalgebras. Class 1 Hopf algebras. Portugaliae mathematica, Tome 17 (1958) no. 4, pp. 127-147. http://geodesic.mathdoc.fr/item/PORMA_1958__17_4_114807/