Hans-Jürgen Bandelt, Michael Anthony Steel. Symmetric Matrices Representable by Weighted Trees Over a Cancellative Abelian Monoid. SIAM J. Discrete Math., 8(4):517-525, 1995. [doi]
@article{BandeltS95,
title = {Symmetric Matrices Representable by Weighted Trees Over a Cancellative Abelian Monoid},
author = {Hans-Jürgen Bandelt and Michael Anthony Steel},
year = {1995},
url = {http://epubs.siam.org/sam-bin/dbq/article/20175},
researchr = {https://researchr.org/publication/BandeltS95},
cites = {0},
citedby = {0},
journal = {SIAM J. Discrete Math.},
volume = {8},
number = {4},
pages = {517-525},
}