Armatas Β., Giannakos Α., and Hatzimanouil Δ. “Record and Evaluation of Set-Plays in European Football Championship in Portugal 2004”. Inquiries in Physical Education and Sport, vol. 5, no. 2, Sept. 2007, pp. 302-7, doi:10.26253/heal.uth.ojs.ispe.2007.1206.