Author: R. L. Graham, B. D. Lubachevsky, K. J. Nurmela, and P. R. J. Östergård

Title: Dense packings of congruent circles in a circle

Journal: Discrete Mathematics 181 (1998), 139-154.

The problem of finding packings of congruent circles in a circle, or, equivalently, of spreading points in a circle, is considered. Two packing algorithms are discussed, and the best packings found of up to 65 circles are presented.