%0 Journal Article
%A Frans Oort
%T Newton polygons and formal groups: Conjectures by Manin and Grothendieck
%J Annals of mathematics
%D 2000
%V 152
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM_2000_152_1_a3/
%F AM_2000_152_1_a3