%0 Journal Article
%A Vejvoda, Otto
%T Periodic solutions of a weakly nonlinear wave equation in $E_3$ in a spherically symmetrical case
%J Applications of Mathematics
%D 1969
%P 160-167
%V 14
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/AM.1969.103218/
%R 10.21136/AM.1969.103218
%G en
%F 10_21136_AM_1969_103218