A microcomputer based approach to the quantification of facial expressions.

@article{Pilowsky1985AMB,
  title={A microcomputer based approach to the quantification of facial expressions.},
  author={Issy Pilowsky and M. Zane Thornton and Barry Stokes},
  journal={Australasian physical & engineering sciences in medicine},
  year={1985},
  volume={8 2},
  pages={70-5}
}