Ziesche, P., Pernal, K., & Tasnadi, F. (2003). New sum rules relating the 1-body momentum distribution of the homogeneous electron gas to the Kimball- Overhauser 2-body wave functions (geminals) of its pair density. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 239(1), 185-192. doi:10.1002/pssb.200301820.