TY - JOUR AU - S. V. Emel'yanov AU - S. K. Korovin AU - S. V. Nikitin TI - Investigation of controllability by methods of the theory of approximation groups and systems on a foliation JO - Doklady Akademii Nauk PY - 1988 SP - 821 EP - 823 VL - 300 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1988_300_4_a12/ LA - ru ID - DAN_1988_300_4_a12 ER -