Arithmetical Complexity of Infinite Words

@inproceedings{Avgustinovich2000ArithmeticalCO,
  title={Arithmetical Complexity of Infinite Words},
  author={Sergey V. Avgustinovich and Dmitry Fon-Der-Flaass and Anna E. Frid},
  booktitle={Words, Languages & Combinatorics},
  year={2000}
}