BibTeX

@ARTICLE{iumj2514,
    author = "Regis Monneau and H. Shahgholian",
     title = "Non-convexity of level sets in convex rings for semilinear elliptic problems",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 54,
      year = 2005,
     issue = 2,
     pages = "465--472",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "35J60; 35R35;",
}

amsrefs

\bib{iumj2514}{article}{
     author = {Monneau, Regis},
     author = {Shahgholian, H.},
      title = {Non-convexity of level sets in convex rings for semilinear elliptic problems},
    journal = {Indiana Univ. Math. J.},
     volume = {54},
       year = {2005},
     number = {2},
      pages = {465 \ndash 472},
}