BibTeX

@ARTICLE{iumj3776,
    author = "J. Ball and Vladimir Bolotnikov and Sanne ter Horst",
     title = "A constrained Nevanlinna-Pick interpolation problem for matrix-valued functions",
   journal = "Indiana Univ. Math. J.",
  fjournal = "Indiana University Mathematics Journal",
    volume = 59,
      year = 2010,
     issue = 1,
     pages = "15--52",
      issn = "0022-2518",
     coden = "IUMJAB",
   mrclass = "47A57; 30E50;",
}

amsrefs

\bib{iumj3776}{article}{
     author = {Ball, J.},
     author = {Bolotnikov, Vladimir},
     author = {ter Horst, Sanne},
      title = {A constrained Nevanlinna-Pick interpolation problem for matrix-valued functions},
    journal = {Indiana Univ. Math. J.},
     volume = {59},
       year = {2010},
     number = {1},
      pages = {15 \ndash 52},
}