%0 Journal Article %A Marek Grochowski %A Ben Warhurst %T Invariants and Infinitesimal Transformations for Contact Sub-Lorentzian Structures on 3-Dimensional Manifolds %J Symmetry, integrability and geometry: methods and applications %D 2015 %V 11 %U http://geodesic.mathdoc.fr/item/SIGMA_2015_11_a30/ %G en %F SIGMA_2015_11_a30