@article{NUMA_1976__26_132405,
     author = {M.A. Noor and J.R. Whiteman},
     title = {Error {Bounds} for {Finite} {Element} {Solutions} of {Mildly} {Nonlinear} {Elliptic} {Boundary} {Value} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {107--116},
     publisher = {mathdoc},
     volume = {26},
     year = {1976},
     zbl = {0312.65079},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1976__26_132405/}
}