TY - JOUR AU - M. A. Cheshkova TI - Geometry of a vector field on a Riemannian manifold JO - Matematičeskie zametki PY - 1993 SP - 153 EP - 155 VL - 54 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1993_54_5_a16/ LA - ru ID - MZM_1993_54_5_a16 ER -