1. Bitsika V, Sharpley CF, Peters K. (2010). How is resilience associated with anxiety and depression? Analysis of factor score interactions within a homogeneous sample. German Journal of Psychiatry 13(1):9-16.
2. Ahmadi J, Farrashbandi H, Majdi B, Mahdavi S, et al. (2005). Prevalence of mood and anxiety disorders in a sample of Iranian outpatient opioid addicts. German Journal of Psychiatry 8(1):5-7.