Perkos Σ., Barkoukis Β., and Christopoulos Ι. “Superstitious Beliefs and Rituals in Sport: Association With Locus of Control, Anxiety and Demographic Characteristics”. Inquiries in Physical Education and Sport, vol. 11, no. 1, Apr. 2013, pp. 20-31, https://journals.lib.uth.gr/index.php/inquiries/article/view/1391.