References for Philon

  1. A G Drachmann, Biography in Dictionary of Scientific Biography (New York 1970-1990).
    http://www.encyclopedia.com/doc/1G2-2830903399.html

Books:

  1. T L Heath, A history of Greek mathematics I, II (Oxford, 1931).

April 1999

MacTutor History of Mathematics
[http://www-history.mcs.st-andrews.ac.uk/References/Philon.html]