Giazitzi Κ., Zetou Ε., Michalopoulou Μ. and Aggelousis Ν. (2007) “Administration and Content Analysis of Timeout during Volleyball Games”, Inquiries in Physical Education and Sport, 5(1), pp. 156–164. doi: 10.26253/heal.uth.ojs.ispe.2007.1191.