TY - JOUR AU - I. Z. Pesenson TI - Functions which are smooth along vector fields JO - Matematičeskie zametki PY - 1990 SP - 95 EP - 102 VL - 48 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1990_48_1_a13/ LA - ru ID - MZM_1990_48_1_a13 ER -