"Colours are light's suffering and joy."
(Goethe)
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1. D. A. Schön: The reflective Practitioner, Basic Books, 1994
2. W. Lidwell, K. Holden, J. Butler: Universal Principles of Design, Rockport, 2003
3. L. Fichner-Rathus, Foundations of Art and Design, Cengage Learning, 2015
4.