References for Ahmed ibn Yusuf

  1. D V Schrader, Biography in Dictionary of Scientific Biography (New York 1970-1990).

Articles:

  1. H L L Busard and P S van Koningsveld, Der 'Liber de arcubus similibus' des Ahmed ibn Jusuf, Ann. of Sci. 30 (1973), 381-406.
  2. M Steinschneider, Yusuf ben Ibrahim und Ahmed ibn Yusuf, Bibliotheca mathematica (1888), 49-117.

November 1999

MacTutor History of Mathematics
[http://www-history.mcs.st-andrews.ac.uk/References/Ahmed.html]