Here is a generalized gamma distribution. https://github.com/jlapeyre/GenGammaDist.jl
https://en.wikipedia.org/wiki/Generalized_gamma_distribution Only rand() and mean() are implemented, and again no tests. This depends on Distributions. The authors of Distributions may want to include something like this. The parameters may be chosen to get the Amoroso distribution (inverse generalized gamma distribution) mentioned in the Wikipedia article. John
