To cite grpsel in publications use:

Thompson R, Vahid F (2021). “Group selection and shrinkage with application to sparse semiparametric modeling.” arXiv:2105.12081.

Corresponding BibTeX entry:

  @Article{,
    title = {Group selection and shrinkage with application to sparse
      semiparametric modeling},
    author = {Ryan Thompson and Farshid Vahid},
    journal = {arXiv:2105.12081},
    year = {2021},
  }