BibTeX

@ARTICLE{iumj22095,
    author = "Constantin Apostol and Ciprian Foias and Laiszlo Zsido",
     title = "Some Results on Non-Quasitriangular Operators",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 22,
      year = 1973,
     issue = 12,
     pages = "1151--1161",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj22095}{article}{
     author = {Apostol, Constantin},
     author = {Foias, Ciprian},
     author = {Zsido, Laiszlo},
      title = {Some Results on Non-Quasitriangular Operators},
    journal = {Indiana Univ. Math. J.},
     volume = {22},
       year = {1973},
     number = {12},
      pages = {1151 \ndash 1161},
}