%0 Journal Article
%A J. Bochenek
%T Properties of nodal lines of eigenfunctions of a certain system of partial differential equations of second order
%J Commentationes Mathematicae
%D 1968
%P  31-34
%V 12
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v12i1.5636/
%R 10.14708/cm.v12i1.5636
%G pl
%F 10_14708_cm_v12i1_5636