@article{JMLR:v17:15-568,
  author  = {Francesca Ieva and Anna Maria Paganoni and Nicholas Tarabelloni},
  title   = {Covariance-based Clustering in Multivariate and Functional Data Analysis},
  journal = {Journal of Machine Learning Research},
  year    = {2016},
  volume  = {17},
  number  = {143},
  pages   = {1--21},
  url     = {http://jmlr.org/papers/v17/15-568.html}
}