@article{SLC_1988_20_a6,
     author = {Volker Strehl},
     title = {A {Combinatorial} {Proof} of {Louck's} {Conjecture}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {20},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/SLC_1988_20_a6/}
}