Beitr\"age zur Algebra und Geometrie
Contributions to Algebra and Geometry
Volume 35 (1994), No. 1, 67-71.
On Mixed Sphere Packings
Salvatore Vassallo, J\"org M.\ Wills
Abstract.
Balls of two different radii \ \hbox{$r_1\delta^3_L$.
These results correspond to similar results on circle packings in the
plane by G. Blind, L. Fejes T\'oth and A. Florian.