@article{GDZPPN002216817, title = {A Correspondence between Hopf Ideals and Sub-Hopf Algebras.}, journal = {Manuscripta mathematica}, volume = {7}, year = {1972}, pages = {251-270}, zbl = {0238.16011}, url = {http://dml.mathdoc.fr/item/GDZPPN002216817} }
Takeuchi, Mitsuhiro. A Correspondence between Hopf Ideals and Sub-Hopf Algebras.. Manuscripta mathematica, Tome 7 (1972) pp. 251-270. http://gdmltest.u-ga.fr/item/GDZPPN002216817/