%0 Journal Article %A Yu. L. Sachkov %A E. F. Sachkova %T Symmetries and Parameterization of Abnormal Extremals in the Sub-Riemannian Problem with the Growth Vector (2, 3, 5, 8) %J Russian journal of nonlinear dynamics %D 2019 %P 577-585 %V 15 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2019_15_4_a17/ %G en %F ND_2019_15_4_a17