1. Number of deaths by suicide in Germany by type of method in the years 2011 to 2013. http://de.statista.com/statistik/daten/studie/585/umfrage/selbstmordmethoden-in-deutschland-2006/ . Accessed 2. September 2015.
2. Houston K, Hawton K, Shepperd R. Suicide in young people aged 15–24: a psychological autopsy study. J Affect Disord. 2001;63(1–3):159–70.
3. Zaninotto L, Souery D, Calati R, Scudellari P, Janiri L, Montgomery S, et al. Mixed, melancholic, and anxious features in depression: a cross-sectional study of sociodemographic and clinical correlates. Ann Clin Psychiatry. 2014;26(4):243–53.
4. Pompili M, Innamorati M, Giupponi G, Pycha R, Rihmer Z, Del Casale A, et al. Predicting risk of suicide in bipolar and unipolar depression: correlation between temperament and personality. Nervenarzt. 2009;80(3):315–23. doi: 10.1007/s00115-008-2611-2 .
5. Suicide and suicidal behaviour [database on the Internet] 2015. Accessed: 04.01.2016