References for Al-Umawi

Version for printing
  1. A S Saidan, Biography in Dictionary of Scientific Biography (New York 1970-1990).
    http://www.encyclopedia.com/doc/1G2-2830904415.html

Books:

  1. Ahmad Salim Saidan (ed.), Yaish ibn Ibrahim al-Umawi, On arithmetical rules and procedures (Aleppo, 1981).
JOC/EFR November 1999

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