%0 Journal Article
%A Burton, T.A.
%T Periodic Solutions by Picard's Approximations
%J Canadian mathematical bulletin
%D 1968
%P 743-745
%V 11
%N 5
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-092-2/
%R 10.4153/CMB-1968-092-2
%F 10_4153_CMB_1968_092_2