Panel participant at “Traumstadt Wien. Chancen von Utopien” (Vienna city of dreams. Chances of utopias) on occasion of the exhibition “zeichenbau – real virtualities. Wien, Architektur. Der Stand der Dinge, Traumstadt Wien II” (Semantic building – real virtualities. Vienna, architecture. State of the art, Vienna city of dreams II) with Rüdiger Lainer, Christian Muhr, Ton Matton, Silvia Renezeder, moderator Christian Kühn, at Künstlerhaus Wien on 16 September 1999