BibTeX

@ARTICLE{iumj20007,
    author = "Tatsuo Tokuoka",
     title = "Collapse of Thick Spherical Shells by External Pressure",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 20,
      year = 1971,
     issue = 1,
     pages = "89--94",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj20007}{article}{
     author = {Tokuoka, Tatsuo},
      title = {Collapse of Thick Spherical Shells by External Pressure},
    journal = {Indiana Univ. Math. J.},
     volume = {20},
       year = {1971},
     number = {1},
      pages = {89 \ndash 94},
}