@article{Ackermann2025a,
  author = "H. Ackermann and A. Henke and J. Chevalere and H. S. Yun and V. V. Hafner and N. Pinkwart and R. Lazarides",
  title = "Physical embodiment and anthropomorphism of AI tutors and their role in student enjoyment and performance",
  year = 2025,
  journal = "npj Science of Learning",
  volume = 10,
  number = 1,
  doi = "10.1038/s41539-024-00293-z"
}