TY - JOUR AU - A. Eduardo Gatto AU - Carlos Segovia TI - Product rule and chain rule estimates for the Haj/lasz gradient on doubling metric measure spaces JO - Colloquium Mathematicum PY - 2006 SP - 19 EP - 24 VL - 105 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm105-1-2/ DO - 10.4064/cm105-1-2 LA - en ID - 10_4064_cm105_1_2 ER -