1. Textbook of Work Physiology;Astrand, P. 0.; Rodahl, K,1977
2. Biological Rhythms and Human Performance;Colquhoun, W.P.,1971
3. Aspects of Human Efficiency: Diurnal Rhythm and Loss of Sleep;Colquhoun, W.P.,1972
4. Diurnal variation in athletic performance;Conroy, R.T.W.L.; O'Brien, M.;Journal of Physiology,1973
5. Competitive Swimming Manual for Coaches and Swimmers;Counsilman, J.E.,1977