Phillips, E. C. (August 1926). «Some Applications of Mathematics to Architecture: Gothic Tracery Curves». The American Mathematical Monthly(en inglés)33 (7): 361-368. ISSN0002-9890. doi:10.2307/2298643.
Phillips, E. C. (August 1926). «Some Applications of Mathematics to Architecture: Gothic Tracery Curves». The American Mathematical Monthly(en inglés)33 (7): 361-368. ISSN0002-9890. doi:10.2307/2298643.
Sykes, Mabel (1994). A sourcebook of problems for geometry: based upon industrial design and architectural ornament. Palo Alto, CA: Dale Seymour Publications. pp. 161-177. OCLC31334043.