Montpetit, R. M., Cazorla, G., Lavoie, J. M. Julkaisussa Swimming Science V (1988)
van Handel, P. J., Katz, A., Troup, J. P., Daniels, J. T., Bradley, P. W. Julkaisussa Swimming Science V (1988)
Cazorla, G., Montpetit, R. R. Julkaisussa Swimming Science V (1988)