Yagagi, S., & Kasai, T. (1980). Variable amount of EMG-RTs on the upper limb extension - about the aimed targed movement with and without target. Japanese Journal of sport psychology, 7(1), S. 48-53.

Yagagi, Susumu, and Tatsuya Kasai. "Variable amount of EMG-RTs on the upper limb extension - about the aimed targed movement with and without target." Japanese Journal of sport psychology 7, no. 1 (1980): S. 48-53.

Yagagi, Susumu, and Tatsuya Kasai. "Variable amount of EMG-RTs on the upper limb extension - about the aimed targed movement with and without target." Japanese Journal of sport psychology 7.1 (1980): S. 48-53.