BibTeX

@ARTICLE{iumj2273,
    author = "Michel Willem and Wenming Zou",
     title = "On a Schrodinger equation with periodic potential and spectrum point zero",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 52,
      year = 2003,
     issue = 1,
     pages = "109--132",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "35Q55; 58E05;",
}

amsrefs

\bib{iumj2273}{article}{
     author = {Willem, Michel},
     author = {Zou, Wenming},
      title = {On a Schrodinger equation with periodic potential and spectrum point zero},
    journal = {Indiana Univ. Math. J.},
     volume = {52},
       year = {2003},
     number = {1},
      pages = {109 \ndash 132},
}