Bibliographical links

OPAC Unipv

https://openweb.unipv.it/openweb/#!cerca?q=jules%20barbier

Person Links

Altra fonte

Treccani - Enciclopedia on line

Enciclopedia Italiana link

http://www.treccani.it/enciclopedia/paul-jules-barbier_%28Enciclopedia-Italiana%29/

Wikipedia link

https://it.wikipedia.org/wiki/Jules_Barbier