1. A promenade around Pascal triangle - number motives;Cobeli;Bull Math Soc Sci Math Roumanie,2013
2. Self-organized criticality: an explanation of 1/f noise;Bak;Phys Rev Lett,1987
3. What is a sandpile?;Levine;Notices Amer Math Soc,2010
4. Su una interessante curiosità numerica;Ciamberlini;Periodico di Matematiche,1937
5. A cellular automaton on a torus;Cobeli;Port Math,2000