[SciPy-user] Reference for scipy.stats.kurtosistest

[Kurt Smith]

Hello scipy-users (Specifically Robert Kern):

I'm making extensive use of scipy.stats.kurtosis, and noticed
'kurtosistest' which calculates the Z-score, and 2-tail Z-probability.
 The source for this function is opaque to me -- what is being
calculated, and how?  Is there a reference to which you can refer me?

Thanks for your time,

Kurt