BibTeX

@ARTICLE{iumj26089,
    author = "R. Jensen",
     title = "Structure of the Non-Monotone Free Boundaries in a Filtration Problem",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 26,
      year = 1977,
     issue = 6,
     pages = "1121--1135",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj26089}{article}{
     author = {Jensen, R.},
      title = {Structure of the Non-Monotone Free Boundaries in a Filtration Problem},
    journal = {Indiana Univ. Math. J.},
     volume = {26},
       year = {1977},
     number = {6},
      pages = {1121 \ndash 1135},
}