@article{NUMA_1985__46_132979,
     author = {Uri Ascher},
     title = {On {Some} {Difference} {Schemes} for {Singular} {Singularly-Perturbed} {Boundary} {Value} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {1--30},
     publisher = {mathdoc},
     volume = {46},
     year = {1985},
     zbl = {0523.65063},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1985__46_132979/}
}