%0 Journal Article
%A Francois Lalonde
%T Isotopy of sympletic balls, Gromov' s radius and the structure of ruled symplectic 4-manifolds.
%J Mathematische Annalen
%D 1994
%P 273-296
%V 300
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1994__300_2_165253/
%F MAN_1994__300_2_165253