TY - JOUR AU - L. V. Lokutsievskiy TI - Convex trigonometry with applications to sub-Finsler geometry JO - Sbornik. Mathematics PY - 2019 SP - 1179 EP - 1205 VL - 210 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2019_210_8_a4/ LA - en ID - SM_2019_210_8_a4 ER -