upward

Diffusion-limited aggregation

S Gonzalez, A R Thornton, S Luding, An event-driven algorithm for fractal cluster formation, CPC 182, 1842 (2011)

F L Braga, M S Ribeiro, Diffusion Limited Aggregation: Algorithm optimization revisited, CPC 182, 1602 (2011)

B B Mandelbrot, B Kol, A Aharony, Angular gaps in radial diffusion-limited aggregation: two fractal dimensions and nontransient deviations from linear self-similarity, PRL 88, 055501 (2002)