FUNCTIONAL NAME: GE2-PYSCF
This is a KINETIC ENERGY Density Functional Theory functional
FUNCTIONAL FAMILY: GGA
DESCRIPTION: Second-order gradient expansion of the kinetic energy density. PySCF variant.
REFERENCES
A. S. Kompaneets and E. S. Pavlovskii., Zh. Eksp. Teor. Fiz. 31, 427 (1956)
D. A. Kirznits., Zh. Eksp. Teor. Fiz. 32, 115 (1957)