Clarys, J. P., Toussaint, H. M., Bollens, E., Vaes, W., Huijing, P. A., de Groot, G., Hollander, A. P., de Witte, B., Cabri, J. Published in Swimming Science V (1988)
Rouard, A. H., Quezel-Ambrunaz, G., Billat, R. P. Published in Swimming Science V (1988)
de Witte, B., Loyens, R., Robeaux, R., Clarys, J. P. Published in Swimming Science V (1988)