@article{groupsparseblockpcaandexplainedvariance,
  title = {Optimal Projected Variance Group-Sparse Block PCA},
  author = {Marie Chavent and Guy Chavent},
  year = {2017},
  eprint = {1705.00461},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1705.00461v2},
}