@article{NUMA_1984__44_132947,
     author = {Eugene O'Riordan},
     title = {Singularly {Perturbed} {Finite} {Element} {Methods.}},
     journal = {Numerische Mathematik},
     pages = {425--434},
     publisher = {mathdoc},
     volume = {44},
     year = {1984},
     zbl = {0569.65065},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1984__44_132947/}
}