Examples from Multilevel Modelling Software Review
c(person("Douglas", "Bates", role = "aut",
             comment = c(ORCID = "0000-0001-8316-9503")),
      person("Martin", "Maechler", role = "aut",
             comment = c(ORCID = "0000-0002-8685-9910")),
      person("Ben", "Bolker", role = "aut",
             email = "bbolker+lme4@gmail.com",
             comment = c(ORCID = "0000-0002-2127-0443")),
      person("Anna", "Ly", role = "cre",
             email = "annahuynh.ly@utoronto.ca",
             comment = c(ORCID = "0000-0002-0210-0342")))
Data and examples from a multilevel modelling software review
  as well as other well-known data sets from the multilevel modelling
  literature.