Referência: KJENDLIE, P.-L.; PEDERSEN, T.; THORESEN, T.; SETLO, T.; MORAN, K.; STALLMAN, R. K. Can you swim in waves? Children's swimming, floating, and entry skills in calm and simulated unsteady water conditions. International Journal of Aquatic Research and Education, v. 7, n. 4, p. 301-313, 2013.