%0 Journal Article
%A Mikulski, W. M.
%T On naturality of the Helmholtz operator
%J Archivum mathematicum
%D 2005
%P 145-149
%V 41
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ARM_2005__41_2_a1/
%G en
%F ARM_2005__41_2_a1