@article{AA_2015_27_1_a0,
     author = {V. N. Berestovskii},
     title = {(Locally) shortest arcs of special {sub-Riemannian}  metric on the {Lie} group~$SO_0(2,1)$},
     journal = {Algebra i analiz},
     pages = {3--22},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2015_27_1_a0/}
}