1. Abbott, Edwin; Flatland, introd. by Thomas Banchoff, Princeton University Press 2015.
2. Banchoff, Thomas; Beyond the third dimension, W H Freeman & Co 1990.
3. Cajori, Florian; Origins of Fourth Dimension Concepts, The American Mathematical Monthly 33, 397–406 (1926).
4. Dali, Salvador; https://www.metmuseum.org/art/collection/search/488880
5. Heinlein, Robert; And he built a crooked house, Street & Smith Publications 1941.