Victor Vasarely, Anadir II (p. 207)
Victor Vasarely, Anadir II, 1956-59, (fonte: https://www.christies.com/img/LotImages/2013/PAR/2013_PAR_03557_0082_000(victor_vasarely_anadir_ii).jpg)
Maurits Cornelis Escher, Circle Limit 4 (p. 207)
Maurits Cornelis Escher, Circle Limit 4, 1960 (fonte: https://www.wikiart.org/en/m-c-escher/circle-limit-iv)
Salvador Dalì, L’immagine sparisce (p. 207)
Salvador Dalì, L’immagine sparisce, 1938 (fonte: https://www.salvador-dali.org/es/obra/catalogo-razonado/resized_imatge.php?obra=466&imatge=1)