New sum rules relating the 1-body momentum distribution of the   homogeneous electron gas to the Overhauser 2-body wave functions of its pair   density
  The recently derived sum rules for the scattering phase shifts of the Overhauser geminals (being 2-body-wave functions which parametrize the pair density together with an appropriately chosen occupancy) are generalized to integral equations which allow in principle to calculate the momentum distribution, supposed the phase sifts of the Overhauser geminals are known from an effective parity-dependent interaction potential (screened Coulomb repulsion). 
P. Ziesche, K. Pernal, F. Tasnadi