@article{GDZPPN00207527X,
title = {Packing of 33 equal Circles on a Sphere.},
journal = {Elemente der Mathematik},
volume = {18},
year = {1963},
pages = {99-100},
zbl = {0112.37502},
url = {http://dml.mathdoc.fr/item/GDZPPN00207527X}
}
Goldberg, M. Packing of 33 equal Circles on a Sphere.. Elemente der Mathematik, Tome 18 (1963) pp. 99-100. http://gdmltest.u-ga.fr/item/GDZPPN00207527X/