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Top 20 Directory:
Top : Science : Math : Recreations : Specific_Numbers : Pi : Calculation
  		• Software
    Sites:
  		• Archimedes' Approximation of Pi: Describes the method introduced by Archimedes for aproximating Pi.
  		• Bailey on Pi: Briefly explains David Bailey's work with NASA's supercomputers and the development of a workable formula to evaluate Pi for any number of decimal places.
  		• David Bailey's Pi Directory: Articles, papers, programmes, tools, algorithms on the calculation of pi.
  		• Fabrice Bellard's PI page: Showcases digit extraction and FFT multiplication algorithms.
  		• John Mathews' bibliography for Computation of Pi: Over a hundred references to the computation of pi.
  		• One Billion Digits of Pi: Ramanujan, modular equations, and approximations.
  		• Pi Calculations by the Buffon's method: Calculating the value of PI using toothpicks, to illustrate Count Buffon's problem, by the students of the Worsley School of Worsley, Alberta Canada.
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