@article{NUMA_1978__30_132550,
     author = {M. van Veldhuizen},
     title = {Higher {Order} {Methods} for a {Singularly} {Perturbed} {Problem.}},
     journal = {Numerische Mathematik},
     pages = {267--280},
     publisher = {mathdoc},
     volume = {30},
     year = {1978},
     zbl = {0425.65044},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1978__30_132550/}
}