John Fox [aut, cre],
  Manuel Marquez [aut],
  Robert Muenchen [ctb],
  Dan Putler [ctb]

Arnaud Travert [aut, cre],
  Jessica Mange [aut]

Silverio Vilchez-Lopez [aut, cre],
  Maria Jose Olmo-Jimenez [aut]

Ulrike Groemping [aut, cre],
  Fox John [ctb]

Maribel Pero <mpero@ub.edu>, David Leiva <dleivaur@ub.edu>, 
	Joan Guardia <jguardia@ub.edu>, Antonio Solanas <antonio.solanas@ub.edu>

Alexandre Adalardo de Oliveira and Paulo Inacio Prado <ecovirtualpackage@gmail.com>

Francois Husson, Julie Josse, Sebastien Le

Silverio Vilchez-Lopez [aut, cre],
  Antonio Jose Saez-Castillo [aut],
  Maria Jose Olmo-Jimenez [aut]

Richard M. Heiberger, with contributions from Burt Holland

Triad sou. [aut, cre],
  Kengo Nagashima [aut] (<https://orcid.org/0000-0003-4529-9045>)

Andrew Heiss, Richard Payne, Christa Schank, Jessica Reese

Kristian Hovde Liland [aut, cre],
  Solve Sæbø [aut]

Monalisa Sipahutar <11.6790@stis.ac.id>,Setia Pramana, Achmad Fauzi

Daniel-Corneliu Leucuta [aut, cre],
  Mihaela Hedesiu [ctb],
  Andrei Achimas [ctb],
  Oana Almasan [ctb]

Tomás R. Cotos Yañez [aut] (<https://orcid.org/0000-0002-7732-6565>),
  Manuel A. Mosquera Rodríguez [aut, cre]
    (<https://orcid.org/0000-0002-4769-6119>),
  Ana Pérez González [aut] (<https://orcid.org/0000-0003-4706-7125>),
  Benigno Reguengo Lareo [aut]

Milan Bouchet-Valat [aut, cre],
  Gilles Bastin [aut]

Juan Cruz Rodriguez [aut, cre],
  Yihui Xie [ctb] (<https://orcid.org/0000-0003-0645-5666>),
  Nicolás Wolovick [ctb]

Patrick Anker [aut, cre] (<https://orcid.org/0000-0003-2302-0445>),
  Global TIES for Children [cph]
    (https://steinhardt.nyu.edu/ihdsc/global-ties)

André Smaniotto [aut, cre],
  Marcelo Magnani [aut],
  Rodrigo Sant'Ana [aut],
  GeoSapiens [cph, fnd]

Pedro Salguero Garcia [aut, cre]
    (<https://orcid.org/0000-0002-1879-3374>)

Dongdong Kong [aut, cre] (<https://orcid.org/0000-0003-1836-8172>)

Salvatore Mangiafico [aut, cre]
    (<https://orcid.org/0000-0003-4668-6821>)

Nicolas Casajus [aut, cre, cph]
    (<https://orcid.org/0000-0002-5537-5294>)