References for Johannes Widman

Version for printing
  1. K Vogel, Biography in Dictionary of Scientific Biography (New York 1970-1990).


  1. W Kaunzner and H Wussing (eds.), Adam Ries, Coss (B G Teubner Verlagsgesellschaft mbH, Stuttgart, 1992).


  1. M Cantor, Vorlesungen über Geschichte der Mathematik II (Leipzig, 1913), 228-.
  2. K Fogel, Merchants' aids in practical arithmetic from the Middle Ages (Russian), Istor.-Mat. Issled. No. 23 (1978), 235-249; 359.

JOC/EFR July 2007

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