2 citations to https://www.mathnet.ru/rus/znsl1452

1. Marek Grochowski, Ben Warhurst, “Invariants and Infinitesimal Transformations for Contact Sub-Lorentzian Structures on 3-Dimensional Manifolds”, SIGMA, 11 (2015), 031, 23 pp.      
2. V. N. Berestovskii, V. V. Gorbatsevich, “Homogeneous spaces with inner metric and with integrable invariant distributions”, Anal.Math.Phys., 4:4 (2014), 263