To cite icenReg in publications use:

Anderson-Bergman C (2017). “icenReg: Regression Models for Interval Censored Data in R.” Journal of Statistical Software, 81(12), pp. 1–23. doi: 10.18637/jss.v081.i12.

Corresponding BibTeX entry:

  @Article{,
    title = {{icenReg}: Regression Models for Interval Censored Data in
      {R}},
    author = {Clifford Anderson-Bergman},
    journal = {Journal of Statistical Software},
    year = {2017},
    volume = {81},
    number = {12},
    pages = {1--23},
    doi = {10.18637/jss.v081.i12},
  }