title: Granular superconductors and a sandpile model with intrinsic spatial randomness.
abstract: We present a model for investigation of self-organized criticality applicable to a real physical system: a granular superconductor. The model demonstrates self-organized behavior even in circumstances when other models do not.
authors.affiliation: Petersburg Nuclear Physics Institute, Gatchina, Leningrad District, 188300 Russia.
authors.forename: S L
authors.initials: SL
authors.lastname: Ginzburg
authors.forename: N E
authors.initials: NE
authors.lastname: Savitskaya