Studies in typewriter keyboard modification: 1. Effects of amount of change, finger load, and copy content on accuracy and speed : Journal of Applied Psychology, Apr 1975, 60.2, 220–226

@inproceedings{Gordon1976StudiesIT,
  title={Studies in typewriter keyboard modification: 1. Effects of amount of change, finger load, and copy content on accuracy and speed : Journal of Applied Psychology, Apr 1975, 60.2, 220–226},
  author={M. E. Gordon and Helen G. Henry and Douglas P. Massengill},
  year={1976}
}