To cite package ‘vsp’ in publications use:

Rohe K, Zeng M, Hayes A, Chen F (2026). vsp: Vintage Sparse PCA for Semi-Parametric Factor Analysis. R package version 0.1.4, https://github.com/rohelab/vsp.

Corresponding BibTeX entry:

  @Manual{,
    title = {vsp: Vintage Sparse PCA for Semi-Parametric Factor
      Analysis},
    author = {Karl Rohe and Muzhe Zeng and Alex Hayes and Fan Chen},
    year = {2026},
    note = {R package version 0.1.4},
    url = {https://github.com/rohelab/vsp},
  }