@misc{reis2018analysis,
  title={Analysis of permanence time in emotional states: A case study using educational software},
  author={Helena Reis and Danilo Alvares and Patricia Jaques and Seiji Isotani},
  year={2018},
  eprint={1803.10810},
  archivePrefix={arXiv},
  primaryClass={stat.AP},
  url={https://arxiv.org/abs/1803.10810}
}