%0 Journal Article
%A S. HELLER
%T On the Uniform Positivity of a Certain Finite Difference Matrix.
%J Numerische Mathematik
%D 1968
%P 46-52
%V 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1968__11_131807/
%F NUMA_1968__11_131807