• Lie Groups of Conformal Motions acting on Null Orbits 

      Carot, Jaume; Coley, A. A.; Sintes, A. M. (SABER ULA, 2008-07-02)
      Lie Groups of Conformal Motions acting on Null Orbits (Carot, Jaume; Coley, A. A.; Sintes, A. M.) Abstract Space-times admitting a 3-dimensional Lie group of conformal motions acting on null orbits containing a ...