@article{SpiesFranzmann2011,
  author    = {Dennis Spies and Simon T. Franzmann},
  title     = {A two-dimensional approach to the political opportunity structure of extreme right parties in Western Europe},
  journal   = {West European politics},
  volume    = {34},
  number    = {5},
  pages     = {1044 -- 1069},
  doi       = {10.1080/01402382.2011.591096},
  year      = {2011},
}