BibTeX

@ARTICLE{iumj57015,
    author = "Avner Friedman",
     title = "Linear Partial Differential Systems with an Additional Differential Equation at One Point",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 7,
      year = 1958,
     issue = 2,
     pages = "173--190",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj57015}{article}{
     author = {Friedman, Avner},
      title = {Linear Partial Differential Systems with an Additional Differential Equation at One Point},
    journal = {Indiana Univ. Math. J.},
     volume = {7},
       year = {1958},
     number = {2},
      pages = {173 \ndash 190},
}