TY - JOUR AU - V. N. Lebedev TI - A variational problem concerning the take-off of a space craft from a circular orbit JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1963 SP - 1126 EP - 1130 VL - 3 IS - 6 UR - http://geodesic.mathdoc.fr/item/ZVMMF_1963_3_6_a15/ LA - ru ID - ZVMMF_1963_3_6_a15 ER -