  The contributions of one-loop diagrams with dynamical vector mesons to masses
and decay constants of pseudoscalar mesons are determined. Hereby, a
relativistic Lagrangian for both the pseudoscalar-meson octet and the
vector-meson nonet is used. The vector mesons are given in the antisymmetric
tensor representation. Both the differences between static and dynamical vector
mesons and the differences between calculations with and without vector mesons
are studied as functions of the light quark mass.
