Hysing, Mari, and Tormod Bøe. “The Psychometric Properties of the Norwegian Version of Brown Attention-Deficit Disorder Scales for Children and Adolescents, 8-12 Years (Brown ADD 8-12)”. PsykTestBarn, vol. 2, no. 1, Jan. 2012, pp. 1-4, https://doi.org/10.21337/0013.