References
- Henry, F. M. Constant and variable performance errors within a group of individuals. Journal of Motor Behavior, 1974, 6, 149–154.
- Schutz, R. W., & Roy, E. A. Absolute error: The devil in disguise. Journal of Motor Behavior, 1973, 5, 141–153.
- Wilks. S. S. Mathematical statistics. New York: Wiley, 1963.