%0 Journal Article %A Jun-Muk Hwang %T An application of Cartan’s equivalence method to Hirschowitz’s conjecture on the formal principle %J Annals of mathematics %D 2019 %P 979-1000 %V 189 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2019.189.3.8/ %R 10.4007/annals.2019.189.3.8 %G en %F 10_4007_annals_2019_189_3_8