%0 Journal Article
%A Shijie Dong
%T The zero mass problem for Klein-Gordon equations: quadratic null interactions
%J Forum of Mathematics, Sigma
%D 2022
%V 10
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.1017/fms.2022.22/
%R 10.1017/fms.2022.22
%G en
%F 10_1017_fms_2022_22