@article{GDZPPN002334135, title = {Primitive subspaces of Hopf algebras of finite depth.}, journal = {Mathematische Annalen}, volume = {287}, year = {1990}, pages = {387-390}, zbl = {0687.57019}, url = {http://dml.mathdoc.fr/item/GDZPPN002334135} }
Halperin, Stephen. Primitive subspaces of Hopf algebras of finite depth.. Mathematische Annalen, Tome 287 (1990) pp. 387-390. http://gdmltest.u-ga.fr/item/GDZPPN002334135/