Rosin, Paul L.; Martin, Ralph R. (2003). "Hidden Inscriptions in the Laurentian Library"(PDF). Proceedings of Int. Soc. Arts, Mathematics, and Architecture (ISAMA): 37–44. Archived from the original(PDF) on 2006-09-24. Retrieved 2007-02-16.
Jonathan Jones (6 December 2002). "Feeding fury". The Guardian.
web.archive.org
Rosin, Paul L.; Martin, Ralph R. (2003). "Hidden Inscriptions in the Laurentian Library"(PDF). Proceedings of Int. Soc. Arts, Mathematics, and Architecture (ISAMA): 37–44. Archived from the original(PDF) on 2006-09-24. Retrieved 2007-02-16.