BibTeX

@ARTICLE{iumj1996,
    author = "Peter Petersen and Shunhui Zhu",
     title = "U(2) invariant four dimensional Einstein metrics",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 44,
      year = 1995,
     issue = 2,
     pages = "451--466",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj1996}{article}{
     author = {Petersen, Peter},
     author = {Zhu, Shunhui},
      title = {U(2) invariant four dimensional Einstein metrics},
    journal = {Indiana Univ. Math. J.},
     volume = {44},
       year = {1995},
     number = {2},
      pages = {451 \ndash 466},
}