Jim Pitman. Enumerations of trees and forests related to branching processes and random walks. In David Aldous, James Propp, editors, Microsurveys in Discrete Probability, Proceedings of a DIMACS Workshop, Princeton, New Jersey, USA, 1997. Volume 41 of DIMACS Series in Discrete Mathematics and Theoretical Computer Science, pages 163-180, DIMACS/AMS, 1997.
Abstract is missing.