%0 Journal Article
%A Wilberd van der Kallen
%A M.R. Stein
%T On the Schur Multipliers of Steinberg and Chevalley Groups over Commutative Rings.
%J Mathematische Zeitschrift
%D 1977
%P 83-94
%V 155
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1977__155_172546/
%F MZ_1977__155_172546