@article{MZ_1979__165_172794,
     author = {Frederick A. Howes},
     title = {An {Improved} {Boundary} {Layer} {Estimate} for a {Singularly} {Perturbed} {Initial} {Value} {Problem.}},
     journal = {Mathematische Zeitschrift},
     pages = {135--142},
     publisher = {mathdoc},
     volume = {165},
     year = {1979},
     zbl = {0378.34003},
     url = {http://geodesic.mathdoc.fr/item/MZ_1979__165_172794/}
}