Palhares, L. R., Bruzi, A. T., Lage, G. M., Fialho, J. V. A. P., Ugrinowitsch, H., & Benda, R. N. (2006). Effects of relative frequency and delay interval of knowledge of results (KR) in the acquisition of motor skills. Brazilian Journal of Motor Behavior, 1(1), 53–63. https://doi.org/10.20338/bjmb.v1i1.7