Matthew Fidler [aut, cre] (<https://orcid.org/0000-0001-8538-6691>),
  Vipul Mann [aut],
  Vishal Sarsani [aut] (<https://orcid.org/0000-0002-9272-3438>),
  Christian Bartels [ctb],
  Bill Denney [aut] (<https://orcid.org/0000-0002-5759-428X>)

Richard Hooijmaijers [aut],
  Matthew Fidler [aut] (<https://orcid.org/0000-0001-8538-6691>),
  Bill Denney [aut, cre] (<https://orcid.org/0000-0002-5759-428X>)

Matthew Fidler [aut, cre] (<https://orcid.org/0000-0001-8538-6691>),
  Bill Denney [ctb] (<https://orcid.org/0000-0002-5759-428X>),
  Wenping Wang [aut],
  Vipul Mann [aut]

Marco Geraci [aut, cph, cre] (<https://orcid.org/0000-0002-6311-8685>),
  Alessio Farcomeni [ctb]

Jelmer Ypma [aut],
  Steven G. Johnson [aut] (author of the NLopt C library),
  Hans W. Borchers [ctb],
  Dirk Eddelbuettel [ctb],
  Brian Ripley [ctb] (build process on multiple OS),
  Kurt Hornik [ctb] (build process on multiple OS),
  Julien Chiquet [ctb],
  Avraham Adler [ctb] (removal deprecated calls from tests,
    <https://orcid.org/0000-0002-3039-0703>),
  Xiongtao Dai [ctb],
  Aymeric Stamm [ctb, cre] (<https://orcid.org/0000-0002-8725-3654>),
  Jeroen Ooms [ctb]

Florian Schwendinger [aut, cre],
  Kurt Hornik [aut]

Fernando Miguez [aut, cre] (<https://orcid.org/0000-0002-4627-8329>),
  Caio dos Santos [ctb] (author of SSscard),
  José Pinheiro [ctb, cph] (author of nlme::nlsList, nlme::predict.gnls,
    nlme::predict.nlme),
  Douglas Bates [ctb, cph] (author of nlme::nlsList, nlme::predict.gnls,
    nlme::predict.nlme),
  R-core [ctb, cph]

S original by Alessandra R. Brazzale <alessandra.brazzale@unipd.it>
  and Ruggero Bellio <ruggero.bellio@uniud.it>.  R port by Alessandra R. 
  Brazzale <alessandra.brazzale@unipd.it>, following earlier work by 
  Douglas Bates.

Zheng Sengui,Lu Xufen,Hou Qiongchen,Zheng Jianhui

Jan Salecker [aut] (<https://orcid.org/0000-0002-9000-4229>),
  Marco Sciaini [aut] (<https://orcid.org/0000-0002-3042-5435>),
  Marina Papadopoulou [rev] (Marina reviewed the package for ropensci,
    see <https://github.com/ropensci/software-review/issues/262>),
  Sebastian Hanss [cre] (Package maintainer together with Jan Salecker)