@article{DCG_1995__14_3_131400,
     author = {J.H. Conway and N.J.A. Sloane and R.H. Hardin and T.D.S. Duff},
     title = {Minimal-Energy {Clusters} of {Hard} {Spheres.}},
     journal = {Discrete & computational geometry},
     pages = {237--260},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1995},
     zbl = {0834.90106},
     url = {http://geodesic.mathdoc.fr/item/DCG_1995__14_3_131400/}
}