@inproceedings{predictingdynamicdifficulty,
  title = {Predicting Dynamic Difficulty},
  author = {Olana Missura and Thomas Gärtner},
  year = {2011},
  booktitle = {NeurIPS 2011 12},
  url = {http://papers.nips.cc/paper/4302-predicting-dynamic-difficulty},
}