@article{M2AN_1974__8_2_61_0,
     author = {Douglas, Jim Jr. and Dupont, Todd and Wheeler, Mary Fanett},
     title = {An $L^\infty $ estimate and a superconvergence result for a {Galerkin} method for elliptic equations based on tensor products of piecewise polynomials},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {61--66},
     publisher = {Dunod},
     address = {Paris},
     volume = {8},
     number = {R2},
     year = {1974},
     mrnumber = {359358},
     zbl = {0315.65062},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1974__8_2_61_0/}
}