@article{empowermentanintroduction,
  title = {Empowerment -- an Introduction},
  author = {Christoph Salge and Cornelius Glackin and Daniel Polani},
  year = {2013},
  eprint = {1310.1863},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1310.1863v2},
}