%0 Journal Article
%A Andruskiewitsch, Nicolás
%A Witsch, Ruskie
%T Notes on Extensions of Hopf Algebras
%J Canadian journal of mathematics
%D 1996
%P 3-42
%V 48
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1996-001-8/
%R 10.4153/CJM-1996-001-8
%F 10_4153_CJM_1996_001_8