@article{10_21136_AM_1968_103159,
     author = {Widlund, O. B.},
     title = {Error estimates for partial differential equations},
     journal = {Applications of Mathematics},
     pages = {208--210},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1968},
     doi = {10.21136/AM.1968.103159},
     zbl = {0198.50104},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1968.103159/}
}