  A parity-conserving and Lorentz-invariant effective field theory of
self-interacting massive vector fields is considered. For the interaction terms
with dimensionless coupling constants the canonical quantization is performed.
It is shown that the self-consistency condition of this system with the
second-class constraints in combination with the perturbative renormalizability
leads to an SU(2) Yang-Mills theory with an additional mass term.
