A discrete Fourier kernel and Fraenkel's tiling conjecture Ron Graham; Kevin O'Bryant — 2005 Acta Arithmetica
Jumping sequences. Butler, Steve; Graham, Ron; Zang, Nan — 2008 Journal of Integer Sequences [electronic only]
Spontaneous Patterns in Disk Packings Boris D. Lubachevsky; Ron L. Graham; Frank H. Stillinger — 2001 Visual Mathematics