Mw. Deoliveira et Sp. Sorella, THE ALGEBRAIC STRUCTURE OF LORENTZ AND DIFFEOMORPHISM ANOMALIES, International journal of modern physics A, 9(17), 1994, pp. 2979-2995
The Wess-Zumino consistency conditions for Lorentz and diffeomorphism
anomalies are discussed by introducing an operator delta which allows
one to decompose the exterior space-time derivative as a BRS commutato
r.