S., Armin (1 September 2016). "Auf dem Papier Millionär" [Millionaire on Paper] (PDF). AnlegerPlus (in German). No. 9 (2016). pp. 14–15. Archived from the original(PDF) on 16 September 2016. Retrieved 21 March 2017.
Niesmann, Andreas (5 June 2016). "Bank-Irrtum zu seinen Gunsten" [Bank Error in His Favor]. Focus (in German). No. 22 (2016). pp. 42–45. Retrieved 21 March 2017.
S., Armin (1 September 2016). "Auf dem Papier Millionär" [Millionaire on Paper] (PDF). AnlegerPlus (in German). No. 9 (2016). pp. 14–15. Archived from the original(PDF) on 16 September 2016. Retrieved 21 March 2017.