BibTeX

@ARTICLE{iumj23003,
    author = "Darrell Hajek",
     title = "A Characterization of $T_3$-Spaces",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 23,
      year = 1974,
     issue = 1,
     pages = "23--25",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj23003}{article}{
     author = {Hajek, Darrell},
      title = {A Characterization of $T_3$-Spaces},
    journal = {Indiana Univ. Math. J.},
     volume = {23},
       year = {1974},
     number = {1},
      pages = {23 \ndash 25},
}