%0 Journal Article
%A Richard L. Rubin
%T Linear operators satisfying the chain rule.
%J Elemente der Mathematik
%D 1983
%P 93-95
%V 38
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ELMA_1983__38_141316/
%F ELMA_1983__38_141316