To cite oem in publications use:

Xiong S, Dai B, Huling J, Qian PZG (2016). “Orthogonalizing EM: A design-based least squares algorithm.” Technometrics, 58, 285–293. doi: 10.1080/00401706.2015.1054436, https://doi.org/10.1080/00401706.2015.1054436.

Huling JD, Chien P (2018). “Fast Penalized Regression and Cross Validation for Tall Data with the oem Package.” Journal of Statistical Software. To appear, https://arxiv.org/abs/1801.09661.

Corresponding BibTeX entries:

  @Article{,
    author = {Shifeng Xiong and Bin Dai and Jared Huling and Peter Z.
      G. Qian},
    title = {Orthogonalizing EM: A design-based least squares
      algorithm},
    journal = {Technometrics},
    year = {2016},
    volume = {58},
    pages = {285--293},
    doi = {10.1080/00401706.2015.1054436},
    url = {https://doi.org/10.1080/00401706.2015.1054436},
  }

  @Article{,
    author = {Jared D. Huling and Peter Chien},
    title = {Fast Penalized Regression and Cross Validation for Tall
      Data with the oem Package},
    journal = {Journal of Statistical Software},
    year = {2018},
    note = {To appear},
    url = {https://arxiv.org/abs/1801.09661},
  }