On the Fock Space Realizations of Nonlinear Algebras Describing the High   Spin Fields in AdS Spaces
  The method of construction of Fock space realizations of Lie algebras is generalized for nonlinear algebras. We consider as an example the nonlinear algebra of constraints which describe the totally symmetric fields with higher spins in the AdS space-time. 
C. Burdik, O. Navratil and A. Pashnev