Reihe Grundlehren der mathematischen WissenschaftenJohn Conway × Sphere Packings, Lattices and Groups John ConwaySpringer USeBook2013 Sphere Packings, Lattices and Groups John ConwaySpringer USeBook2013 Sphere Packings, Lattices and Groups John ConwaySpringer USSoftcover2010 Sphere Packings, Lattices and Groups John ConwaySpringer USSoftcover2010 Sphere Packings, Lattices and Groups John ConwaySpringer USHardcover1998 Sphere Packings, Lattices and Groups John ConwaySpringer USHardcover1998