The Generalized Gutzwiller Method for n=>2 Correlated Orbitals:   Itinerant Ferromagnetism in eg-bands
  Using the generalized Gutzwiller method we present results on the ferromagnetic behavior of extended Hubbard models with two degenerate eg orbitals. We find significant differences to results obtained from Hartree-Fock theory. 
J. Buenemann and W. Weber