Kongerslev, M. T., S. Bo, A. E. Forth, and E. Simonsen. “Assessment of the Affective Dimensions of Psychopathy With the Danish Version of the Inventory of Callous-Unemotional Traits Among Incarcerated Boys: A Study of Reliability, Criterion Validity, and Construct Validity”. Scandinavian Journal of Child and Adolescent Psychiatry and Psychology, vol. 3, no. 1, May 2015, pp. 80-96, https://tidsskrift.dk/sjcapp/article/view/18240.