@article{10_4153_CMB_1982_059_4,
     author = {Wilker, J. B.},
     title = {Hausdorff {Obstructions} to {Packing} {(N-1)-Balls} in {N-Space}},
     journal = {Canadian mathematical bulletin},
     pages = {414--420},
     year = {1982},
     volume = {25},
     number = {4},
     doi = {10.4153/CMB-1982-059-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1982-059-4/}
}