@article{languagemixinginreasoninglanguagemodels,
  title = {Language Mixing in Reasoning Language Models: Patterns, Impact, and Internal Causes},
  author = {Mingyang Wang and Lukas Lange and Heike Adel and Yunpu Ma and Jannik Strötgen and Hinrich Schütze},
  year = {2025},
  eprint = {2505.14815},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2505.14815v1},
}