1. Alexander, L. B., & Luborsky, L. (1986). The Penn Helping Alliance Scales. In The psychotherapeutic process: A research handbook (pp. S325–S366). Guilford Press.
2. Age at onset and latency to treatment (duration of untreated illness) in patients with mood and anxiety disorders: a naturalistic study
3. Duration of untreated illness in major depressive disorder: a naturalistic study
4. Der "Helping Alliance Questionnaire" (HAQ) von Luborsky. Möglichkeiten zur Evaluation des therapeutischen Prozesses von stationärer Psychotherapie [The "Helping Alliance Questionnaire" (HAQ) by Luborsky.];Bassler M.;Psychotherapeut,,1995
5. Beck, A. T., & Steer, R. A. (1991). Manual for the Beck scale for suicide ideation. Psychological Corporation, 63.