FUNCTIONAL NAME: GEA2-PSI4
This is a KINETIC ENERGY Density Functional Theory functional
FUNCTIONAL FAMILY: MGGA
DESCRIPTION: Second-order gradient expansion. Psi4 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)