To cite package ‘spef’ in publications use:

Chiou S, Wang X, Yan J (2020). spef: Semiparametric Estimating Functions. R package version 1.0.9, https://github.com/stc04003/spef.

Corresponding BibTeX entry:

  @Manual{,
    title = {spef: Semiparametric Estimating Functions},
    author = {Sy Han (Steven) Chiou and Xiaojing Wang and Jun Yan},
    year = {2020},
    note = {R package version 1.0.9},
    url = {https://github.com/stc04003/spef},
  }