BibTeX

@ARTICLE{iumj1952,
    author = "Asma Harcharras and Stefan Neuwirth and Krzysztof Oleszkiewicz",
     title = "Lacunary matrices",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 50,
      year = 2001,
     issue = 4,
     pages = "1675--1690",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "47B10; 43A46; 05C38; 05C80; 46B15;",
}

amsrefs

\bib{iumj1952}{article}{
     author = {Harcharras, Asma},
     author = {Neuwirth, Stefan},
     author = {Oleszkiewicz, Krzysztof},
      title = {Lacunary matrices},
    journal = {Indiana Univ. Math. J.},
     volume = {50},
       year = {2001},
     number = {4},
      pages = {1675 \ndash 1690},
}