@article{EJDE_2015__2015__a99,
     author = {Chorfi, Nejmeddine and Jleli, Mohamed},
     title = {Approximation of the singularity coefficients of an elliptic equation by mortar spectral element method},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2015},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a99/}
}