Bøe, Tormod, and Mari Hysing. “The Psychometric Properties of the Norwegian Version of Brown Attention-Deficit Disorder Scales for Children and Adolescents, 3-7 Years (Brown ADD Scales 3-7)”. PsykTestBarn, vol. 1, no. 1, Nov. 2011, pp. 1-4, https://doi.org/10.21337/0010.