Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1979__54_139809, author = {Rene Ruchti}, title = {Twisted {Hopf} {Algebras.}}, journal = {Commentarii mathematici Helvetici}, pages = {659--682}, publisher = {mathdoc}, volume = {54}, year = {1979}, zbl = {0422.16004}, url = {http://geodesic.mathdoc.fr/item/CMH_1979__54_139809/} }
Rene Ruchti. Twisted Hopf Algebras.. Commentarii mathematici Helvetici, Tome 54 (1979), pp. 659-682. http://geodesic.mathdoc.fr/item/CMH_1979__54_139809/