@article{KleinRosenberger2012,
  author    = {Markus Klein and Elke Rosenberger},
  title     = {Tunneling for a class of difference operators},
  journal   = {ANNALES HENRI POINCARE},
  volume    = {13},
  number    = {5},
  pages     = {1231 -- 1269},
  doi       = {10.1007/s00023-011-0152-x},
  year      = {2012},
}