Gauss-Hermite Approximation Formula
  A multidimesional function $y(\vec r)$ defined by a sample of points $\{\vec r_i,y_i\}$ is approximated by a differentiable function $\widetilde y(\vec r)$. The problem is solved by using the Gauss-Hermite folding method developed in the nuclear shell correction method by Strutinsky. 
Krzysztof Pomorski