Mark Dukes, Robert Parviainen. Ascent Sequences and Upper Triangular Matrices Containing Non-Negative Integers. Electr. J. Comb., 17(1), 2010. [doi]
@article{DukesP10,
title = {Ascent Sequences and Upper Triangular Matrices Containing Non-Negative Integers},
author = {Mark Dukes and Robert Parviainen},
year = {2010},
url = {http://www.combinatorics.org/Volume_17/Abstracts/v17i1r53.html},
researchr = {https://researchr.org/publication/DukesP10},
cites = {0},
citedby = {0},
journal = {Electr. J. Comb.},
volume = {17},
number = {1},
}