Roper, David L. “William Shakespeare A Study of the Poet and Five Famous Contemporaries Who Between Them Used the Rune Ciphers to Reveal His True Identity”. Journal of Scientific Exploration 31, no. 4 (December 27, 2017). Accessed May 21, 2024. https://www.journalofscientificexploration.org/index.php/jse/article/view/1160.