TY - JOUR AU - R. L. Graham AU - B. D. Lubachevsky TI - Repeated patterns of dense packings of equal disks in a square JO - The electronic journal of combinatorics PY - 1996 VL - 3 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/1240/ DO - 10.37236/1240 ID - 10_37236_1240 ER -