@article{NUMA_1969__13_131899,
     author = {P.G. CIARLET and R.S. VARGA and M.H. SCHULTZ},
     title = {Numerical {Methods} of {High-Order} {Accuracy} for {Nonlinear} {Boundary} {Value} {Problems.} {V.} {Monotone} {Operator} {Theor.}},
     journal = {Numerische Mathematik},
     pages = {51--77},
     publisher = {mathdoc},
     volume = {13},
     year = {1969},
     zbl = {0181.18603},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1969__13_131899/}
}