  We present a self-consistent theory of superconductors in the presence of
Kondo impurities, using large-$N$ slave-boson methods to treat the impurity
dynamics. The technique is tested on the s-wave case and shown to give good
results compared to other methods for $T_K > T_c$. We calculate low temperature
thermodynamic and transport properties for various superconducting states,
including isotropic s-wave and representative anisotropic model states with
line and point nodes on the Fermi surface.
