@article{EJDE_2007__2007__a225,
     author = {Denche, Mohamed and Meziani, Abderrahmane},
     title = {Boundary-value problems for second-order differential operators with nonlocal boundary conditions},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2007},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a225/}
}