Iv. Tyutin et Ss. Shakhverdiev, EQUIVALENCE OF LAGRANGIAN AND HAMILTONIAN SP(2)-SYMMETRICAL BRST QUANTIZATIONS, Theoretical and mathematical physics, 110(1), 1997, pp. 109-118
The existence of a local solution to the quantum Sp(2) master equation
and the equivalence of the Lagrangian and Hamiltonian Sp(2) quantizat
ions are proved in the framework of perturbation theory.