(1999). Urban Future: Preparatory expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21.

Urban Future: Preparatory Expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21. Bonn, 1999.

Urban Future: Preparatory Expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21. 1999.