@article{1183529387,
author = {Mallows, C. L. and Riordan, John},
title = {The inversion enumerator for labeled trees},
journal = {Bull. Amer. Math. Soc.},
volume = {74},
number = {6},
year = {1968},
pages = { 92-94},
language = {en},
url = {http://dml.mathdoc.fr/item/1183529387}
}
Mallows, C. L.; Riordan, John. The inversion enumerator for labeled trees. Bull. Amer. Math. Soc., Tome 74 (1968) no. 6, pp. 92-94. http://gdmltest.u-ga.fr/item/1183529387/