BibTeX

@ARTICLE{iumj29061,
    author = "Michael Gage",
     title = "Upper Bounds for the First Eigenvalue of the Laplace-Beltrami Operator",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 29,
      year = 1980,
     issue = 6,
     pages = "897--912",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj29061}{article}{
     author = {Gage, Michael},
      title = {Upper Bounds for the First Eigenvalue of the Laplace-Beltrami Operator},
    journal = {Indiana Univ. Math. J.},
     volume = {29},
       year = {1980},
     number = {6},
      pages = {897 \ndash 912},
}