We derive the representative Bernstein measure of the density of (Xα), 0 < α < 1, where Xα is a positive stable random variable, as a Fox-H function. Up to a factor, this measure describes the law of some function aα of a uniform random variable U on (0,π). The distribution function of a1−α(U) is then expressed through a H-function and is used to describe more explicitly the density of the anal...