Mimetic finite difference approximation of flows in fractured porous media Paola F. Antonietti, Luca Formaggia, Anna Scotti, Marco Verani and Nicola Verzott ESAIM: M2AN, 50 3 (2016) 809-832 Published online: 23 May 2016 DOI: 10.1051/m2an/2015087