Test of a universality ansatz for the contact values of the radial   distribution functions of hard-sphere mixtures near a hard wall
  Recent Monte Carlo simulation results for the contact values of polydisperse hard-sphere mixtures at a hard planar wall are considered in the light of a universality assumption made in approximate theoretical approaches. It is found that the data seem to fulfill the universality ansatz reasonably well, thus opening up the possibility of inferring properties of complicated systems from the study of simpler ones 
Mariano Lopez de Haro, Santos B. Yuste, and Andres Santos