Halvorsen, Marianne, and Sissel Berge Helverschou. “The Psychometric Properties of the Norwegian Version of Autism Diagnostic Interview- Revised (ADI-R)”. PsykTestBarn 7, no. 1 (June 27, 2017): 1–17. Accessed September 25, 2026. https://septentrio.uit.no/index.php/psyktestbarn/article/view/7478.