@article{10_4153_CMB_1982_021_7,
     author = {Rigby, J. F.},
     title = {Five {Mutually} {Tangent} {Spheres} and {Various} {Associated} {Configurations}},
     journal = {Canadian mathematical bulletin},
     pages = {149--163},
     year = {1982},
     volume = {25},
     number = {2},
     doi = {10.4153/CMB-1982-021-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1982-021-7/}
}