1. Berghmans, R., G. Widdershoven, and I. Widdershoven-Heerding. 2013. Physician-assisted suicide in psychiatry and loss of hope. International Journal of Law and Psychiatry, 36(5–6): 436–443.
2. Bowes, L., C. Joinson, D. Wolke, and G. Lewis. 2015. Peer victimisation during adolescence and its impact on depression in early adulthood: Prospective cohort study in the United Kingdom. British Medical Journal 350: h2469.
3. Brådvik, L., and L. Crona. 2009. Long-lasting recovery in chronic severe depression. Follow-up of two cases, 46 and 50 years after their first admissions for depression. Medical Science Monitor 1(10): 31–35.
4. Chiles, J.A., and K.D. Strosahl. 2008. Clinical manual for assessment and treatment of suicidal patients. American Psychiatric Association Publishing.
5. Ciarrochi, J., L. Bilich, and C. Godsell. 2010. Psychological flexibility as a mechanism of change in acceptance and commitment therapy. In Assessing mindfulness and acceptance processes in clients: Illuminating the theory and practice of change, edited by R.A. Baer, 51–75. New Harbinger Publications.