Infinitesimal CR automorphisms and stability groups of infinite type   models in $\mathbb C^2$
  The purpose of this paper is to give explicit descriptions for stability groups of real rigid hypersurfaces of infinite type in $\mathbb C^2$. The decompositions of infinitesimal CR automorphisms are also given. 
Atsushi Hayashimoto and Ninh Van Thu
math.CV