To cite CLME in publications use:

  Casey M. Jelsema, Shyamal D. Peddada (2016). CLME: An R Package for
  Linear Mixed Effects Models under Inequality Constraints. Journal of
  Statistical Software, 75(1), 1-32. doi:10.18637/jss.v075.i01

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{CLME}: An {R} Package for Linear Mixed Effects Models under Inequality Constraints},
    author = {Casey M. Jelsema and Shyamal D. Peddada},
    journal = {Journal of Statistical Software},
    year = {2016},
    volume = {75},
    number = {1},
    pages = {1--32},
    doi = {10.18637/jss.v075.i01},
  }

Laura Farnan, Anastasia Ivanova, and Shyamal D. Peddada (2014). Linear
Mixed Efects Models Under Inequality Constraints with Applications.
PLOS ONE, 9(1). doi: 10.1371/journal.pone.0084778

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Linear Mixed Efects Models Under Inequality Constraints with Applications},
    author = {Laura Farnan and Shyamal D. Peddada},
    journal = {PLOS ONE},
    year = {2014},
    volume = {9},
    number = {1},
    doi = {10.1371/journal.pone.0084778},
  }
