Šimleša, M., J. Guegan, E. Blanchard, F. Tarpin-Bernard, and S. Buisine. “The Flow Engine Framework: A Cognitive Model of Optimal Human Experience”. Europe’s Journal of Psychology, Vol. 14, no. 1, Mar. 2018, pp. 232-53, doi:10.5964/ejop.v14i1.1370.