Continually learning new languages

@misc{pham2023continually,
  title = {Continually learning new languages},
  author = {Ngoc-Quan Pham and J. Niehues and A. Waibel},
  year = {2023},
  url = {https://www.semanticscholar.org/paper/954ca9ab894df43e2cac18bc3813e9f9bc1bd488},
}