Kierlik and Rosinberg's weighted density approximation
In the Kierlik and Rosinberg's weighted density approximation   four weighting functions are used so as to reproduce the Percus-Yevick direct pair correlation function for the uniform hard sphere model.
Aplication to polyatomic fluids
- E. Kierlik and M. L. Rosinberg "Free-energy density functional for the inhomogeneous hard-sphere fluid: Application to interfacial adsorption", Physical Review A 42 pp. 3382-3387 (1990)
- E. Kierlik and M. L. Rosinberg "Density-functional theory for inhomogeneous fluids: Adsorption of binary mixtures", Physical Review A 44 pp. 5025-5037 (1991)