Américo, H. B., F. L. Cardoso, G. F. Machado, M. O. Cabral, E. R. Resende, and I. T. Costa. “Analysis of the Tactical Behavior in Soccer Players of Different Age Levels”. Journal of Physical Education , Vol. 27, no. 1, Mar. 2016, p. e-2710, https://periodicos.uem.br/ojs/index.php/RevEducFis/article/view/27694.