%0 Journal Article %A Chorfi, Nejmeddine %A Jleli, Mohamed %T Approximation of the singularity coefficients of an elliptic equation by mortar spectral element method %J Electronic Journal of Differential Equations %D 2015 %V 2015 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a99/ %G en %F EJDE_2015__2015__a99