BibTeX

@ARTICLE{iumj19038,
    author = "S. Nigam and T. Srinivasan",
     title = "Invariant Elastic Constants for Crystals",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 19,
      year = 1970,
     issue = 5,
     pages = "411--420",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj19038}{article}{
     author = {Nigam, S.},
     author = {Srinivasan, T.},
      title = {Invariant Elastic Constants for Crystals},
    journal = {Indiana Univ. Math. J.},
     volume = {19},
       year = {1970},
     number = {5},
      pages = {411 \ndash 420},
}