@article{NUMA_1971__18_132114,
     author = {N.L. Schryer},
     title = {Solution of {Monotone} {Nonlinear} {Elliptic} {Boundary} {Value} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {336--344},
     publisher = {mathdoc},
     volume = {18},
     year = {1971},
     zbl = {0215.27502},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1971__18_132114/}
}