BibTeX

@ARTICLE{iumj57007,
    author = "Richard Bellman and Howard Osborn",
     title = "Dynamic Programming and the Variation of Green's Functions",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 7,
      year = 1958,
     issue = 1,
     pages = "81--85",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj57007}{article}{
     author = {Bellman, Richard},
     author = {Osborn, Howard},
      title = {Dynamic Programming and the Variation of Green's Functions},
    journal = {Indiana Univ. Math. J.},
     volume = {7},
       year = {1958},
     number = {1},
      pages = {81 \ndash 85},
}