Christian Krattenthaler. Combinatorial Proof of the Log-Concavity of the Sequence of Matching Numbers. Journal of Combinatorial Theory, Series A, 74(2):351-354, 1996. [doi]
@article{Krattenthaler96,
title = {Combinatorial Proof of the Log-Concavity of the Sequence of Matching Numbers},
author = {Christian Krattenthaler},
year = {1996},
doi = {10.1006/jcta.1996.0058},
url = {http://dx.doi.org/10.1006/jcta.1996.0058},
researchr = {https://researchr.org/publication/Krattenthaler96},
cites = {0},
citedby = {0},
journal = {Journal of Combinatorial Theory, Series A},
volume = {74},
number = {2},
pages = {351-354},
}