1. Alexander RM (1977) Swimming. In: Alexander RM, Goldspink G (eds) Mechanics and energetics of animal locomotion. Chapman, London, pp 222–248
2. Cavagna G, Kaneko M (1977) Mechanical work and efficiency in level walking and running. J Physiol 268:467–481
3. Costill DL, Rayfield F, Kirwan J, Thomas R (1986) A computer based system for the measurement of force and power during front crawl swimming. J Swim Res 2:16–19
4. Craig Jr AB, Pendergast DR (1979) Relationships of stroke rate, distance per stroke and velocity in competitive swimming. Med Sci Sports Exer 11:278–283
5. Daniel TL (1991) Efficiency in aquatic locomotion: limitations from single cells to animals. In: Blake RW (ed) Efficiency and economy in animal physiology. Cambridge University Press, Cambridge, pp 83–96