  By scaling the mesonic masses in the Walecka model, to the inverse of the
hadronic effective mass in medium, we generate the Zimanyi-Moszkowski (ZM)
models added to a surface term. For infinite nuclear matter, the surface term
vanishes and this new model becomes equivalent to the usual ZM model. For
finite nuclei calculations, the surface contribution changes the spin-orbit
splitting in the right experimental direction. Calculations for some nuclei are
presented.
