@article{Yannakakis_2021,
  author={G.N. Yannakakis and R. Cowie and C. Busso},
  title={The Ordinal Nature of Emotions: An Emerging Approach},
  journal={IEEE Transactions on Affective Computing},
  number={1},
  volume={12},
  pages={16-35},
  year={2021},
  month={January-March},
  doi={10.1109/TAFFC.2018.2879512},
}