Paris Sorbonne University has a network of more than twenty libraries, located across Paris in its various centers.
Information – in French – about the libraries (opening hours, location, access) can be found here: http://bit.ly/28KlcmR
Information on various Sorbonne library services and resources can be found here: http://www.paris-sorbonne.fr/les-bibliotheques
The historical Sorbonne Inter-University Library (BIS: Bibliothèque Interuniversitaire de la Sorbonne) is not part of this network. Any information concerning this library can be found on their website: http://www.bibliotheque.sorbonne.fr/biu/.