Lie group structures on automorphism groups of real-analytic CR   manifolds
  Given any real-analytic CR manifold M, we provide general conditions on M guaranteeing that the group of all its global real-analytic CR automorphisms is a Lie group (in an appropriate topology). Our conditions are in particular satisfied when M is an arbitrary compact real-analytic hypersurface embedded in some Stein manifold. 
Bernhard Lamel, Nordine Mir, Dmitri Zaitsev