To cite L2E in publications use:

Chi JT, Chi EC (2022). “A User-Friendly Computational Framework for Robust Structured Regression with the L$_2$ Criterion.” Journal of Computational and Graphical Statistics. doi:10.1080/10618600.2022.2035232.

Liu X, Chi EC, Lange K (2022+). “A Sharper Computational Tool for L$_2$E Regression.” Technometrics, In press..

Corresponding BibTeX entries:

  @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},
    year = {2022},
    doi = {10.1080/10618600.2022.2035232},
  }

  @Article{,
    title = {A Sharper Computational Tool for L$_2$E Regression},
    author = {Xiaoqian Liu and Eric C. Chi and Kenneth Lange},
    journal = {Technometrics, In press.},
    year = {2022+},
  }