%0 Journal Article
%A Swanson, C. A.
%T On a Non-Analytic Perturbation Problem
%J Canadian mathematical bulletin
%D 1961
%P 243-248
%V 4
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1961-027-6/
%R 10.4153/CMB-1961-027-6
%F 10_4153_CMB_1961_027_6