Link to the official English translation of the obituary written by Jens Stoltenberg, who at the time was the Prime Minister of Norway.
Link to the official English translation of the obituary written by Atle Seierstad and Arne Strøm, Knut's colleagues in Oslo, as well as coauthors of both Knut and myself.
Link to my own tribute to Knut, including some of the history behind our collaboration.