bibentry(bibtype = "Book",
         title = "Panel Data Econometrics with {R}",
         author = c(person(given = "Yves",
                          family = "Croissant",
                          email = "yves.croissant@univ-reunion.fr"),
                   person(given = "Giovanni",
                          family = "Millo",
                          email = "giovanni.millo@deams.units.it")),
         publisher = "Wiley",
         year = "2018",
         header = "To cite plm in publications use:"
         )

bibentry(bibtype = "Article",
         title        = "Panel Data Econometrics in {R}: The {plm} Package",
         author       = c(person(given = "Yves",
                                 family = "Croissant",
                                 email = "yves.croissant@univ-reunion.fr"),
                          person(given = "Giovanni",
                                 family = "Millo",
                                 email = "giovanni.millo@deams.units.it")),
         journal      = "Journal of Statistical Software",
         year         = "2008",
         volume       = "27",
         number       = "2",
         pages        = "1--43",
         doi          = "10.18637/jss.v027.i02",
         header       = "To cite plm in publications use:"
         )

bibentry(bibtype = "Article",
         title        = "Robust Standard Error Estimators for Panel Models: A Unifying Approach",
         author       = person(given = "Giovanni",
                               family = "Millo",
                               email = "giovanni.millo@deams.units.it"),
         journal      = "Journal of Statistical Software",
         year         = "2017",
         volume       = "82",
         number       = "3",
         pages        = "1--27",
         doi          = "10.18637/jss.v082.i03",
         header       = "For the covariance matrix estimators in plm, please cite:"
)
