@article{EJC_1996__3_1_118908, author = {Graham, R.L. and Lubachevski, B.D.}, title = {Repeated patterns of dense packings of equal disks in a square.}, journal = {The Electronic Journal of Combinatorics [electronic only]}, publisher = {mathdoc}, volume = {3}, number = {1}, year = {1996}, zbl = {0851.05038}, language = {en}, url = {https://geodesic-test.mathdoc.fr/item/EJC_1996__3_1_118908/} }