BibTeX

@ARTICLE{iumj3433,
    author = "Erik Lindgren and A. Petrosyan",
     title = "Regularity of the free boundary in a two-phase semilinear problem in two dimensions",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 57,
      year = 2008,
     issue = 7,
     pages = "3397--3418",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "35R35;",
}

amsrefs

\bib{iumj3433}{article}{
     author = {Lindgren, Erik},
     author = {Petrosyan, A.},
      title = {Regularity of the free boundary in a two-phase semilinear problem in two dimensions},
    journal = {Indiana Univ. Math. J.},
     volume = {57},
       year = {2008},
     number = {7},
      pages = {3397 \ndash 3418},
}