1. Skinfold estimates of body fat among marathon runners;Costill, D.L.; Bowers, R.; Kammer, W.F.;Med.& Sci. Sports,1970
2. Body fat assessed from total body density and its estimation from skinfold thickness: measurement on 481 men and women aged from 16 to 72 years;Durnin, J.V.G.A.; Womersley, J.;Br. J. Nutr,1974
3. 1985 "Wet behind the seams: A look at wet suits";Harper, D.;Triathlete Magazine
4. The two-period cross-over clinical trial;Hills, M.; Armitage, P.M.;Br. J. Clin. Pharmacol,1979
5. 1985 'Swim + Bike + Runs Triathlon: The Sporting Trinity";Hunter, A.; Kirschbaum, E.;Allen, London