Ramos Villagrasa, Pedro José, and Antonio León García Izquierdo. “Analysis Techniques of Chaotic Patterns: A Review of Empirical Studies in Psychology”. Anales De Psicología Annals of Psychology, vol. 27, no. 1, Jan. 2010, pp. 239-48, https://revistas.um.es/analesps/article/view/113681.