Corinna Rossi: Architecture and Mathematics in Ancient Egypt.Cambridge University Press, 2004, ISBN 978-1-107-32051-2, S. 207f.
uni-heidelberg.de
digi.ub.uni-heidelberg.de
John Shae Perring, Richard Howard-Vyse, William Howard: Operations carried on at the Pyramids of Gizeh in 1837: with an account of a voyage into upper Egypt, and Appendix. Band 3 Appendix. Fraser, London 1842, S. 65; Digitalisat der Uni Heidelberg online.
