@article{01566579,
title = {A combinatorial proof of Louck's conjecture.},
journal = {S\'eminaire Lotharingien de Combinatoire [electronic only]},
volume = {19},
year = {1988},
zbl = {0962.05502},
language = {en},
url = {http://dml.mathdoc.fr/item/01566579}
}
Strehl, Volker. A combinatorial proof of Louck's conjecture.. Séminaire Lotharingien de Combinatoire [electronic only], Tome 19 (1988) . http://gdmltest.u-ga.fr/item/01566579/