BibTeX

@ARTICLE{iumj3768,
    author = "Dorin Bucur and Giuseppe Buttazzo and Antoine Henrot",
     title = "Minimization of $\lambda_{2}(\Omega)$ with a perimeter constraint",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 58,
      year = 2009,
     issue = 6,
     pages = "2709--2728",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "49Q10; 49J45; 49R50; 35P15; 47A75;",
}

amsrefs

\bib{iumj3768}{article}{
     author = {Bucur, Dorin},
     author = {Buttazzo, Giuseppe},
     author = {Henrot, Antoine},
      title = {Minimization of $\lambda_{2}(\Omega)$ with a perimeter constraint},
    journal = {Indiana Univ. Math. J.},
     volume = {58},
       year = {2009},
     number = {6},
      pages = {2709 \ndash 2728},
}