@article{somfai1994power,
  title={Power-law distribution of landslides in an experiment on the erosion of a granular pile},
  author={Somfai, E and Czirok, A and Vicsek, T},
  journal={Journal of Physics A: Mathematical and General},
  volume={27},
  number={20},
  pages={L757},
  year={1994},
  publisher={IOP Publishing}
}