Lie algebras of infinitesimal automorphisms for the model manifolds of   general classes ${\sf II}$, ${\sf III_2}$ and ${\sf IV_2}$
  We determine the Lie algebras of infinitesimal automorphisms for the models of the CR-manifolds belonging to general classes ${\sf II}$, ${\sf III_2}$ and ${\sf IV_2}$ through Cartan's equivalence method. 
Samuel Pocchiola
math.CV