Emotions and facial expression.

@article{Fridlund1985EmotionsAF,
  title={Emotions and facial expression.},
  author={A J Fridlund and Avery N Gilbert and Carroll E. Izard and A N Burdett},
  journal={Science},
  year={1985},
  volume={230 4726},
  pages={607-8, 610, 687}
}