More than that, it's worth perusing all of Flajolet's papers, they're a wonderful intersection of analysis combinatorics and algorithms, and the recent book he had Coauthored (before his unfortunate passing last year) http://algo.inria.fr/flajolet/Publications/book.pdf is an amazing book.

Do you have a citation? A PDF link would be great and appreciated.

Thanks. I've seen it before but will give a re-read.