1. Self Organized Critical Scaling at Surfaces
   A. Stella, C. Tebaldi and G. Caldarelli,
   Physical Review E 52, 72 (1995).
2. Quenched Disorder, Memory and Self Organization
   M. Marsili, G. Caldarelli and M. Vendruscolo,
   Physical Review E 53, R13-R16 (1996).
3. Branching Processes and Evolution at the Ends of a Food Chain
   G. Caldarelli, C. Tebaldi and A. L. Stella,
   Physical Review Letters 76, 4983-4986 (1996).
4. Self Organization and Annealed Disorder in Fracturing Processes
   G. Caldarelli, F. Di Tolla, A. Petri,
   Physical Review Letters 77, 2503-2508 (1996).
5. Hot Sandpiles
   G. Caldarelli, A. Maritan, M. Vendruscolo,
   Europhysics Letters 35, 481-485 (1996).
6. Randomly Pinned Fluvial Landscape Evolution
   G. Caldarelli, A. Giacometti, A. Maritan, I. Rodriguez-Iturbe, A. Rinaldo,
   Physical Review E 55, R4865-R4868 (1997).
7. Mean Field Theory for Ordinary and Hot Sandpiles
   G.Caldarelli,
   Physica A 252, 295-307 (1998).
8. Stationary Self-Organized Fractal Structures in an Open, Dissipative Electrical System
   M. Marani, J. R. Banavar, G. Caldarelli A. Maritan, A. Rinaldo,
   Journal of Physics A 31, L337-L343 (1998).
9. Comment on First Order Transition in the Breakdown of Disordered Media
   G. Caldarelli, A.Petri,
   Physical Review Letters 83,1483 (1999).
10. Criticality in Model for Fractures in Disordered Media
    G. Caldarelli, C. Castellano, A. Petri,
    Physica A 270, 15 (1999).
11. Critical behaviour in the fracture of disordered media
    G. Caldarelli, C. Castellano, A. Petri,
    Philosophical Magazine B 79 1939-1944 (1999)
12. Invasion Percolation with Temperature and the Nature of SOC in Real Systems
    A. Gabrielli, G. Caldarelli, L. Pietronero,
    Physical Review E, 62, 7638 (2000)
13. Cellular Models for River Networks
    G. Caldarelli,
    Physical Review E 63, 21118 (2001)
14. A Perturbative approach to the Bak and Sneppen Model
    M. Felici, G. Caldarelli, A. Gabrielli, L. Pietronero,
    Physical Review Letters 86, 1896 (2001).
15. A Probablistic approach to the Bak Sneppen Model
    G. Caldarelli, M. Felici, A. Gabrielli, L. Pietronero,
    Physical Review E 65, 046101 (2002).

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