M. T. Kongerslev, 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”, Scand J Child Adolesc Psychiatry Psychol, vol. 3, no. 1, pp. 80–96, May 2015.