References for Joseph-Émile Barbier

1. R Taton, Biography in Dictionary of Scientific Biography (New York 1970-1990).
   http://www.encyclopedia.com/doc/1G2-2830900262.html

Books:

2. J Bertrand, Association des anciens élèves de l'École normale (Paris, 1890).

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http://www-history.mcs.st-andrews.ac.uk/References/Barbier.html