@article{DBLCL2024IO_HMM,
  title={Identifiability of discrete input--output hidden Markov models with external signals},
  author={David, Etienne and Bellot, Jean and Le Corff, Sylvain and Leh{\'e}ricy, Luc},
  journal={Statistics and Computing},
  volume={34},
  number={1},
  pages={54},
  year={2024},
  publisher={Springer}
}