@article{SLC_2001-2002_47_a1,
     author = {Andreas Dress and M. Klucznik and Jack Koolen and Vincent Moulton},
     title = {2kn - {Binomial(2k+1,2)}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {47},
     year = {2001-2002},
     url = {http://geodesic.mathdoc.fr/item/SLC_2001-2002_47_a1/}
}