@article{yuan2005,
  title={Model Selection and Estimation in Regression with Grouped Variables},
  author={Ming Yuan and Yi Lin},
  year={2005},
  journal={Journal of the Royal Statistical Society Series B (Statistical Methodology)},
  doi={10.1111/j.1467-9868.2005.00532.x},
  url={https://doi.org/10.1111/j.1467-9868.2005.00532.x}
}