@article{deci1985,
  title={Intrinsic Motivation and Self-Determination in Human Behavior},
  author={Edward L. Deci and Richard M. Ryan},
  year={1985},
  doi={10.1007/978-1-4899-2271-7},
  url={https://doi.org/10.1007/978-1-4899-2271-7}
}