1. Abensour M (1999) William Morris: the politics of romance. In: Blechmann M (ed) Revolutionary romanticism. City Lights Books, San Francisco
2. Ache P (2015) The future of the city—the future of the metropolis? In: Hospers G-J, Van Melik R, Ernste H (eds) Visies op de stad. NN, NN
3. Ache P (2017) Metropolitan visions: instant, concrete, and conflict free futures? Territorio:7–14
4. Alexander E (1992) Approaches to planning: introducing current planning theories, concepts and issues. Gordon and Breach Science Publ. SA, Luxembourg
5. Bloch E (1985/1954) Das Prinzip Hoffnung Berlin, Suhrkamp