Hypertext bibliography
"Repeated Patterns of Dense Packings of Equal Disks in a Square"
by R. L. Graham and B. D. Lubachevsky
The portion of the bibliography of this paper which is accessible electronically is:
[GL1] R. L. Graham and B. D. Lubachevsky,
Repeated Patterns of Dense Packings of Equal Disks in a Square
,
Electronic Journal of Combinatorics
2
(1995), #A1, 39pp.