%0 Journal Article %A Ramon Piedra %A José M. Tornero %T Hironaka's characteristic polygon and effective resolution of surfaces %J Comptes Rendus. Mathématique %D 2007 %P 309-312 %V 344 %N 5 %I Elsevier %R 10.1016/j.crma.2007.01.021 %G en %F CRMATH_2007__344_5_309_0