%0 Journal Article %A Jordi Guàrdia %A Jesús Montes %A Enric Nart %T Okutsu invariants and Newton polygons %J Acta Arithmetica %D 2010 %P 83-108 %V 145 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa145-1-5/ %R 10.4064/aa145-1-5 %G en %F 10_4064_aa145_1_5