. . "I. Douven"@nl-NL . . . "Igor Edvard John Douven" . "1963" . . . . "Igor"@en . "Igor Douven"@en . . "Douven"@en . "I. Douven" . "Douven"@fr-FR . . "Douven, I. (Igor Edvard John)" . "I." . "Edvard John" . "Igor Edvard John Douven" . . .