TY - JOUR AU - G. Metivier TI - Uniqueness and approximation of Solutions of first order non linear equations. JO - Inventiones mathematicae PY - 1985 SP - 263 EP - 282 VL - 82 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1985__82_143286/ ID - IM_1985__82_143286 ER -