1. A comparison between diazepam, dixyrazine, opipramol and placebo in anxiety states.;Arfwidsson;Acta psychiat. scand. Suppl.,1971
2. The measurement of anxiety in clinical situations.;Buss;J. cons. Psychol.,1955
3. d'Elia, G. , A. Isaksson , O. Larkander , C. Morsing , J.-O. Ottosson , C. Perris & W. Rapp (1969): Reliabilitet vid skattning av depressions-symptom och läkemedelsbiverkningar. Ur Symposium om depressions-behandling, MSD, Stockholm.
4. The assessment of anxiety states by rating.;Hamilton;Brit. J. med. Psychol.,1959