%0 Journal Article
%A Harry Yserentant
%T Two preconditioners based on the multi-level splitting of finite element spaces.
%J Numerische Mathematik
%D 1990
%P 163-184
%V 58
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1990__58_5_133494/
%F NUMA_1990__58_5_133494