John Fox [aut],
  Sanford Weisberg [aut],
  Brad Price [aut, cre],
  Daniel Adler [ctb],
  Douglas Bates [ctb],
  Gabriel Baud-Bovy [ctb],
  Ben Bolker [ctb],
  Steve Ellison [ctb],
  David Firth [ctb],
  Michael Friendly [ctb],
  Gregor Gorjanc [ctb],
  Spencer Graves [ctb],
  Richard Heiberger [ctb],
  Pavel Krivitsky [ctb],
  Rafael Laboissiere [ctb],
  Martin Maechler [ctb],
  Georges Monette [ctb],
  Duncan Murdoch [ctb],
  Henric Nilsson [ctb],
  Derek Ogle [ctb],
  Iain Proctor [ctb],
  Brian Ripley [ctb],
  Tom Short [ctb],
  William Venables [ctb],
  Steve Walker [ctb],
  David Winsemius [ctb],
  Achim Zeileis [ctb],
  R-Core [ctb]

Mikkel Meyer Andersen [aut, cre, cph],
  Søren Højsgaard [aut, cph]

Renjie Luo [aut, cre],
  Feifang Hu [aut, ctb]

Nicolas Le Moine [aut],
  Celine Monteil [aut],
  Frederic Hendrickx [ctb],
  Fabrice Zaoui [aut, cre],
  Alban de Lavenne [ctb]

Fuyi Tu [aut],
  Xiaoqing Ye [aut, cre],
  Wei Ma [aut, ths],
  Feifang Hu [aut, ths]

Duncan Lee, Alastair Rushworth, Gary Napier and William Pettersson

Timothy J Heaton [aut, cre, cph] (ORCID:
    <https://orcid.org/0000-0002-9994-142X>),
  Sara Al-assam [aut, cph] (ORCID:
    <https://orcid.org/0000-0001-7280-6802>)

Hamza Suleman [aut, cre, cph],
  Alec Phillpotts [ctb, aut],
  Jasmine Wells [ctb, aut],
  David Leake [ctb, aut]

Lily Clements [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-8864-0552>)

Fraenzi Korner-Nievergelt [aut, cre],
  Ivo Niermann [aut],
  Oliver Behr [aut],
  Matthew A. Etterson [aut],
  Robert Brinkmann [aut],
  Pius Korner [aut],
  Barbara Hellriegel [aut],
  Tobias Roth [aut],
  Manuela M. P. Huso [aut],
  Dan Dalthorp [aut]

Anish S. Shah [aut, cre, cph] (ORCID:
    <https://orcid.org/0000-0002-9729-1558>)

Andre Leite [aut, cre],
  Marcos Wasiliew [aut],
  Hugo Vasconcelos [aut],
  Carlos Amorim [aut],
  Diogo Bezerra [aut]

John Fox [aut],
  Sanford Weisberg [aut],
  Brad Price [aut, cre]

Sarah Lau [aut, ctb] (ORCID: <https://orcid.org/0000-0003-1742-0821>),
  Adrian Wong [aut, ctb],
  Yi-Fei Gu [aut, cre] (ORCID: <https://orcid.org/0000-0003-1741-638X>)