Ancient Greek Scientists: Philolaus  
   Basic information on the life and legacy of this ancient scholar.
   http://www.tmth.edu.gr/en/aet/1/80.html

Wikipedia: Philolaus  
   Article incorporating information from the 1911 Britannica.
   http://www.wikipedia.org/wiki/Philolaus

Notes on Anaxagoras and Philolaus  
   Course notes on these contemporaries of Socrates, interpreting their ideas as reactions to the challenge posed by Parmenides and Zeno.
   http://www.gmu.edu/courses/phil/ancient/anph2.htm

Carl A. Huffman, Philolaus of Croton: Pythagorean and Presocratic  
   A 1994 evaluation by Patricia K. Curd of this book, printed in the Bryn Mawr Classical Review.
   http://omega.cohums.ohio-state.edu/mailing_lists/BMCR-L/Mirror/1994/94.03.14.html