%0 Journal Article %A Carles BiviĆ -Ausina %T The index of analytic vector fields and Newton polyhedra %J Fundamenta Mathematicae %D 2003 %P 251-267 %V 177 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm177-3-5/ %R 10.4064/fm177-3-5 %G en %F 10_4064_fm177_3_5