1. Variability in the dolphin kick under four conditions;Barthels,1971
2. The shoulder, EMG and the swimming stroke;Birrer;J Swim Res,1986
3. Peripheral EMG comparison between fully tethered and free front crawl swimming;Bollens,1988
4. Peripheral EMG control of handpaddle influence on swimming movements;Bollens,1985
5. Electromyographic analysis of muscle action about the shoulder;Bradley;Clin Sports Med,1991