In a letter to his son Lucien, 26 July 1892, as quoted in "Letters of the great artists - from Blake to Pollock" by Richard Friedenthal, Thames and Hudson, London, p. 146, 1963.
Asger Jorn, Per Hovdenakk, Stine Høholt, Arken museum for moderne kunst (Ishøj, Denmark), Cobra Museum voor Moderne Kunst (Amstelveen, Netherlands) (2002). “Asger Jorn”