%0 Journal Article
%A H. Schwerdtfeger
%T Invariants of a class of transformation groups II. (Short Communication).
%J Aequationes mathematicae
%D 1978
%P 114-114
%V 17
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1978__17_136729/
%F AM2_1978__17_136729