citHeader("To cite 'quadrupen' in publications, please use:")

bibentry(
  bibtype = "Manual",
  author = person(given = "Julien ", family = "Chiquet"),
  title = "Quadrupen: Sparse and Group Sparse Linear Models",
  year = "2026",
  url = "https://github.com/jchiquet/quadrupen",
  textVersion = "Julien Chiquet. Quadrupen: Sparse and Group Sparse Linear Models, R Package, 2026."
)

bibentry(
  bibtype = "article",
  key = "quadrupen",
  title = "Sparsity by Worst-Case Quadratic Penalties",
  author = c("Yves Grandvalet", "Julien Chiquet", "Christophe Ambroise"),
  journal = "arXiv preprint",
  year = "2012",
  url = "https://arxiv.org/abs/1210.2077",
  textVersion = "Y. Grandvalet, J. Chiquet and C. Ambroise. Sparsity by Worst-Case Quadratic Penalties, arXiv preprint, 2012."
)
