To cite L2E in publications use:

Chi JT, Chi EC (2021+). “A User-Friendly Computational Framework for Robust Structured Regression with the L$_2$ Criterion.” Journal of Computational and Graphical Statistics, In press.. https://arxiv.org/abs/2010.04133.

Corresponding BibTeX entry:

  @Article{,
    title = {A User-Friendly Computational Framework for Robust
      Structured Regression with the L$_2$ Criterion},
    author = {Jocelyn T. Chi and Eric C. Chi},
    journal = {Journal of Computational and Graphical Statistics, In
      press.},
    year = {2021+},
    url = {https://arxiv.org/abs/2010.04133},
  }