To cite SQUAREM in publications use:

Du Y, Varadhan R (2020). “SQUAREM: An R Package for Off-the-Shelf Acceleration of EM, MM and Other EM-Like Monotone Algorithms.” Journal of Statistical Software, 92(7), 1–41. doi:10.18637/jss.v092.i07.

Corresponding BibTeX entry:

  @Article{,
    title = {{SQUAREM}: An {R} Package for Off-the-Shelf Acceleration
      of {EM}, {MM} and Other {EM}-Like Monotone Algorithms},
    author = {Yu Du and Ravi Varadhan},
    journal = {Journal of Statistical Software},
    year = {2020},
    volume = {92},
    number = {7},
    pages = {1--41},
    doi = {10.18637/jss.v092.i07},
  }