TY - JOUR AU - M. I. Ronzhina AU - L. A. Manita AU - L. V. Lokutsievskiy TI - Solutions of a Hamiltonian system with two-dimensional control in a neighbourhood of a singular second-order extremal JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2021 SP - 936 EP - 938 VL - 76 IS - 5 UR - http://geodesic.mathdoc.fr/item/RM_2021_76_5_a5/ LA - en ID - RM_2021_76_5_a5 ER -