BibTeX

@ARTICLE{iumj56003,
    author = "D. Trifan",
     title = "On a Complementary Energy Principle",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 6,
      year = 1957,
     issue = 1,
     pages = "87--90",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj56003}{article}{
     author = {Trifan, D.},
      title = {On a Complementary Energy Principle},
    journal = {Indiana Univ. Math. J.},
     volume = {6},
       year = {1957},
     number = {1},
      pages = {87 \ndash 90},
}