Door Sander Bakker (31 July 2009). "Impressie uit "Birmingham"" (in Dutch and German). FagotClub Nederland. Archived from the original on 21 July 2011. Retrieved 16 March 2011.
Door Sander Bakker (31 July 2009). "Impressie uit "Birmingham"" (in Dutch and German). FagotClub Nederland. Archived from the original on 21 July 2011. Retrieved 16 March 2011.