%0 Journal Article
%A E. Trubowitz
%A B.E.J. Dahlberg
%T A remark on two dimensional periodic potentials.
%J Commentarii mathematici Helvetici
%D 1982
%P 130-134
%V 57
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1982__57_139898/
%F CMH_1982__57_139898