@article{ELMA_1965__20_140804,
     author = {Michael Goldberg},
     title = {Packing of 18 {Equal} {Circles} on a {Sphere.}},
     journal = {Elemente der Mathematik},
     pages = {59--61},
     publisher = {mathdoc},
     volume = {20},
     year = {1965},
     zbl = {0129.37502},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1965__20_140804/}
}