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2. Forsey, J.: The Aesthetics of Design. Oxford University Press (2013)
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4. Pye, D.: The nature and aesthetics of design. Van Norstrand Reinhold 11, 13 (1978)
5. Rams, D.: Omit the Unimportant. In: Victor, M., (ed.) Design Discourse: History, Theory, Criticism, pp. 111–113. Chicago University Press (1984)