TY - JOUR AU - Ambrosio, Luigi TI - The Flow Associated to Weakly Differentiable Vector Fields: Recent Results and Open Problems JO - Bollettino della Unione matematica italiana PY - 2007 SP - 25 EP - 41 VL - 10B IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BUMI_2007_8_10B_1_a1/ LA - en ID - BUMI_2007_8_10B_1_a1 ER -