1. An analysis of water resistance and propulsion in swimming the crawl stroke;Alley;Res. Quarterly,1952
2. A study of the relationship of arm and shoulder strength and endurance in freestyle swimming;Cambell,1948
3. Forces in swimming two types of crawl strokes;Counsilman;Res. Quarterly,1955
4. Relationships between tethered and free swimming the front crawl stroke (abstract);Craig;J. Biomechanics,1980
5. Use of stroke rate, distance per stroke, and velocity relationships during training for competitive swimming;Craig,1979