@article{10_4153_CMB_1970_012_2,
     author = {Boyd, David W.},
     title = {Osculatory {Packings} by {Spheres}},
     journal = {Canadian mathematical bulletin},
     pages = {59--64},
     year = {1970},
     volume = {13},
     number = {1},
     doi = {10.4153/CMB-1970-012-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-012-2/}
}