TY - JOUR AU - Lei Tan TI - Branched coverings and cubic Newton maps JO - Fundamenta Mathematicae PY - 1997 SP - 207 EP - 260 VL - 154 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-154-3-207-260/ DO - 10.4064/fm-154-3-207-260 LA - en ID - 10_4064_fm_154_3_207_260 ER -