BibTeX

@ARTICLE{iumj20023,
    author = "Andrew Schoene",
     title = "Semi-Groups and a Class of Singular Perturbation Problems",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 20,
      year = 1971,
     issue = 3,
     pages = "247--263",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj20023}{article}{
     author = {Schoene, Andrew},
      title = {Semi-Groups and a Class of Singular Perturbation Problems},
    journal = {Indiana Univ. Math. J.},
     volume = {20},
       year = {1971},
     number = {3},
      pages = {247 \ndash 263},
}