Sundermann, Werner; Iranist, Werner Sundermann deutscher (2009-09-21). "94954936". VIAF. Archived from the original on 13 September 2016. Retrieved 3 May 2017.
Sundermann, Werner; Iranist, Werner Sundermann deutscher (2009-09-21). "94954936". VIAF. Archived from the original on 13 September 2016. Retrieved 3 May 2017.