@article{Roy:2016,
  author  = "A. Roy and R. Zmyślony and M. Fonseca and R. Leiva",
  title   = "Optimal estimation for doubly multivariate data in blocked compound symmetric covariance structure",
  journal = "Journal of Multivariate Analysis",
  volume  = "Vol. 144",
  pages   = "81--90",
  year    = "2016",
}