@article{CherstvyMetzler2014,
  author    = {Andrey G. Cherstvy and Ralf Metzler},
  title     = {Nonergodicity, fluctuations, and criticality in heterogeneous diffusion processes},
  journal   = {Physical review : E, Statistical, nonlinear and soft matter physics},
  volume    = {90},
  number    = {1},
  doi       = {10.1103/PhysRevE.90.012134},
  year      = {2014},
}