%0 Journal Article
%A N. Anghel
%T On the Index of Callias-type Operators.
%J Geometric and functional analysis
%D 1993
%P 431-438
%V 3
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/GFA_1993__3_6_58139/
%F GFA_1993__3_6_58139