References for Jan de Witt

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  1. J B Easton, Biography in Dictionary of Scientific Biography (New York 1970-1990).
  2. Biography in Encyclopaedia Britannica.


  1. N Japikse, Johan de Witt (Amsterdam, 1915).


  1. A W Grootendorst, The 'conic sections' according to Johan de Witt (Dutch), in Summer course 1995 : conic sections and quadratic forms (Amsterdam, 1995), 15-55.

JOC/EFR August 2006

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