Aggelonidis Γ., Kountouris Π., Laios Γ., and Katsikadelli Α. “The Effect of the Application of the New Volleyball Regulations According to the Opinion of Coaches and Athletes”. Inquiries in Physical Education and Sport, vol. 2, no. 1, Mar. 2004, pp. 33-39, https://journals.lib.uth.gr/index.php/inquiries/article/view/1028.