BibTeX

@ARTICLE{iumj24014,
    author = "Richard Bishop",
     title = "Infinitesimal Convexity Implies Local Convexity",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 24,
      year = 1975,
     issue = 2,
     pages = "169--172",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj24014}{article}{
     author = {Bishop, Richard},
      title = {Infinitesimal Convexity Implies Local Convexity},
    journal = {Indiana Univ. Math. J.},
     volume = {24},
       year = {1975},
     number = {2},
      pages = {169 \ndash 172},
}