BibTeX

@ARTICLE{iumj27007,
    author = "Sam Gutmann and L. Shepp",
     title = "Orthogonal Bases for Two Subspaces with all Mutual Angles Acute",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 27,
      year = 1978,
     issue = 1,
     pages = "79--90",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "",
}

amsrefs

\bib{iumj27007}{article}{
     author = {Gutmann, Sam},
     author = {Shepp, L.},
      title = {Orthogonal Bases for Two Subspaces with all Mutual Angles Acute},
    journal = {Indiana Univ. Math. J.},
     volume = {27},
       year = {1978},
     number = {1},
      pages = {79 \ndash 90},
}