Sletteng, Ruben; Harnang, Andreas Kolflaath; Hoxmark, Ellen Margrethe; Aslaksen, Per M.; Friborg, Oddgeir; Wynn, Rolf. A psychometric study of the Drug Use Disorder Identification Test - Extended in a Norwegian sample. Psychological Reports 2011; Volum 109 (2). ISSN 0033-2941.s 663 - 674.s doi: 10.2466/03.09.13.15.PR0.109.5.663-674.
