@article{67271,
  author = {Nir Sharon and Uri Itai},
  title = {Approximation schemes for functions of positive-definite matrix values},
  year = {2013},
  journal = {IMA Journal of Numerical Analysis},
  volume = {33},
  pages = {1436{\textendash}1468},
  publisher = {Oxford University Press},
  language = {eng},
}