References
- March , N. H. and Santamaria , R. 1991 . Int. J. Quantum Chem. , 39 : 585
- Lee , H. , Lee , C. and Parr , R. G. 1991 . Phys. Rev. , A44 : 768
- McWeeny , R. 1987 . Molecular quantum mechanics , London : Academic . See, for example
- Eq. (7) of Ref. 1 should have a factor 1/4 rather than 1/2 multiplying the density matrix gradients.
- Eq. (14) of Ref. 1 is modified as a consequence of Ref. 4 above to have a factor 1/16 rather than 1/8
- Becke , A. D. 1988 . Phys. Rev. , A38 : 3098
- Of course, one can add functions that integrate to zero.