Rusdal, Espen Hågensen (20 June 2014). "Tålmodighetens kunst" [The art of patience] (in Norwegian). Archived from the original on 22 July 2014. Retrieved 1 September 2014.
Rusdal, Espen Hågensen (20 June 2014). "Tålmodighetens kunst" [The art of patience] (in Norwegian). Archived from the original on 22 July 2014. Retrieved 1 September 2014.