TY - JOUR AU - D. V. Novikov TI - Topological features of the Sokolov integrable case on the Lie algebra $\mathrm{so}(3,1)$ JO - Sbornik. Mathematics PY - 2014 SP - 1107 EP - 1132 VL - 205 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2014_205_8_a2/ LA - en ID - SM_2014_205_8_a2 ER -