- 2015-01-26.
Retrieved 2016-05-08. Clas
Barkman (16 July 2006). "Sopranen som
misstror det perfekta".
Dagens Nyheter (in Swedish).
Dagens Nyheter (Swedish daily...
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Dagens Nyheter,
September 11, 2004 (in Swedish) Clas Barkman, "Sopranen som
misstror det perfekta",
Dagens Nyheter, July 16, 2006 (in Swedish) "Thomas SunnegÄrdh...