1。Why Are So Many Important Events Unpredictable? Self-Organized Criticality as the ‘Engine of History’
    作者 Gregory G. Brunk

2.Self-Organized Criticality Applied to Natural Hazards
   作者 Bruce D. Malamud and Donald L. Turcotte
3。Forest fires: an example of self-organized critical behavior
    作者 BD Malamud, G Morein, DL Turcotte