1. Kokshaysky, N. V. Ocherk Biologicheskoi Aero- i Gidrodinamiki (Polet i Plavanie Zhivotnykh) [An Essay on Biological Aero- and Hydrodynamics (Flight and Swimming of Animals)] (Nauka, Moscow, 1974).
2. Brown, R. H. J. Biol. Rev. 38, 460–489 (1963).
3. Rayner, J. M. V. J. exp. Biol. 80 (in the press).
4. Rayner, J. M. V. J. Fluid Mech. 91, 739–770 (1979).