Frédéric Meunier. A combinatorial proof of a theorem of Freund. Journal of Combinatorial Theory, Series A, 115(2):317-325, 2008. [doi]
@article{Meunier08-0,
title = {A combinatorial proof of a theorem of Freund},
author = {Frédéric Meunier},
year = {2008},
doi = {10.1016/j.jcta.2007.04.003},
url = {http://dx.doi.org/10.1016/j.jcta.2007.04.003},
researchr = {https://researchr.org/publication/Meunier08-0},
cites = {0},
citedby = {0},
journal = {Journal of Combinatorial Theory, Series A},
volume = {115},
number = {2},
pages = {317-325},
}