%0 Journal Article
%A Z. Ciesielski
%T On the spectrum of the Laplace operator
%J Commentationes Mathematicae
%D 1970
%P  41-50
%V 14
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v14i1.5686/
%R 10.14708/cm.v14i1.5686
%G pl
%F 10_14708_cm_v14i1_5686