Editing Weighted density approximation

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==References==
#[http://dx.doi.org/10.1016/0038-1098(77)91185-1 O. Gunnarsson, M. Jonson and B. I. Lundqvist "Exchange and correlation in inhomogeneous electron systems", Solid State Communications  '''24''' pp. 765-768 (1977)]
#[http://dx.doi.org/10.1103/PhysRevB.17.3735     J. A. Alonso and L. A. Girifalco "Nonlocal approximation to the exchange potential and kinetic energy of an inhomogeneous electron gas", Physical Review B '''17'' pp. 3735 - 3743 (1978)]
#[http://dx.doi.org/10.1103/PhysRevB.20.3136 O. Gunnarsson, M. Jonson and B. I. Lundqvist "Descriptions of exchange and correlation effects in inhomogeneous electron systems" Physical Review B '''20''' 3136 - 3164 (1979)]
[[Category: Density-functional theory]]
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-In this approximation the [[Helmholtz energy function]] depends on the weighted density, that is: some average of the density.
-==See also==
-*[[Kierlik and Rosinberg's weighted density approximation]]
-*[[Tarazona's weighted density approximation]]
 ==References==
 #[http://dx.doi.org/10.1016/0038-1098(77)91185-1 O. Gunnarsson, M. Jonson and B. I. Lundqvist "Exchange and correlation in inhomogeneous electron systems", Solid State Communications  '''24''' pp. 765-768 (1977)]