Epp-Tb-85

@article{Epp-Tb-85,
title = {Trees in \TeX},
author = {David Eppstein},
journal = {TUGboat},
publisher = {{\TeX} Users' Group},
volume = {6},
number = {1},
pages = {31},
year = {1985},
url = {http://www.ics.uci.edu/~eppstein/pubs/p-ttree.tex.Z}}