To cite the 'msir' package in publications use:

Scrucca, L. (2011) Model-based {SIR} for dimension reduction. Computational Statistics & Data Analysis, 5(11), 3010-3026.

Corresponding BibTeX entry:

  @Article{,
    title = {Model-based SIR for dimension reduction},
    author = {Luca Scrucca},
    journal = {Computational Statistics \& Data Analysis},
    year = {2011},
    volume = {5},
    number = {11},
    pages = {3010--3026},
  }