C. Fosco et R. Montemayor, QUANTIZATION OF MASSIVE CHIRAL ELECTRODYNAMICS REEXAMINED, Physical review. D. Particles and fields, 47(10), 1993, pp. 4798-4800
We show that the models considered by Andrianov et al. [Phys. Rev. Let
t. 63, 1554 (1989); and Phys. Rev. D 44, 2602 (1991)] are equivalent t
o other models where it is easily proved that the anomaly decouples an
d consequently the value of the chiral triangle amplitude is irrelevan
t for the unitarity of the S matrix.