@article{AM2_1987__33_137211,
     author = {Roger J. Wallace},
     title = {The maximal solution of a restricted subadditive inequality in numerical analysis.},
     journal = {Aequationes mathematicae},
     pages = {183--193},
     publisher = {mathdoc},
     volume = {33},
     year = {1987},
     zbl = {0629.39001},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__33_137211/}
}