TY - JOUR AU - V. N. Berestovskii TI - (Locally) shortest arcs of special sub-Riemannian metric on the Lie group~$SO_0(2,1)$ JO - Algebra i analiz PY - 2015 SP - 3 EP - 22 VL - 27 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_2015_27_1_a0/ LA - ru ID - AA_2015_27_1_a0 ER -