Adams JA:A closed-loop theory of motor learning. J Mot Behav 3:111-149,1971.
Schmidt RA:A Schema Theory of Discrete Motor Skill Learning. Psycholog Rev 82:225- 260,1975.
Winstein CJ:Knowledge of results and motor learning-implications for physical therapy. Phys Ther 71:140-149,1991.
Wulf G, et al.:Reduced feedback frequency enhances generalized motor program learning but not parameterization learning. J Exp Psychol 19 (5) :1134-1150,1993.
Wulf G, Lee TD:Contextual interference in movements of the same class:differential effects on program and parameter learning. J Mot Behav 25(4):254-263,1993.