Es. Egoryan et Rp. Manvelyan, QUANTIZATION OF DYNAMICAL-SYSTEMS WITH 1ST AND 2ND CLASS CONSTRAINTS, Theoretical and mathematical physics, 94(2), 1993, pp. 173-181
The problem of quantizing Hamiltonian dynamical systems with constrain
ts of first and second class by reduction to systems with constraints
of only the first claw in an extended phase space is considered.