1. Metallic Phase with Long-Range Orientational Order and No Translational Symmetry
2. Tilings and Patterns;Grünbaum,1987
3. Aperiodic Order. Vol 1. A Mathematical Invitation;Baake,2013
4. M. C. Escher, His Life and Complete Graphic Work: With a Fully Illustrated Catalogue;Escher,1982
5. Zur Zerlegung der Umgebung eines ebenen Bereiches in kongruente;Voderberg;Jahresber. Deutsch. Math. Ver.,1936