== Wrong formula for V(x;sigma,gamma)? == 

 Currently the article says, 

 "The defining integral can be evaluated as: 

 : 

 where Re[w(z) ] is the real part of the complex error function  of z  and 

 :" 

 but I don't think that's right. For one, if γ=0, it should look like a Gaussian, but error function with real parameter looks nothing like a Gaussian.  

 Evaluating the integral with Mathematica (under assumptions ,  and x (i.e. the parameter that we are not integrating over) gives the expression below, and for a few examples I tried it looks correct, so I'm replacing it.  

 :