citHeader("To cite PSAgraphics in publications use:")

bibentry(
  bibtype = "Article",
  title        = "{PSAgraphics}: An {R} Package to Support Propensity Score Analysis",
  author       = c(person("James", "Helmreich", , "James.Helmreich@Marist.edu", role = "aut"),
                   person("Robert", "Pruzek", role = "aut")),
  journal      = "Journal of Statistical Software",
  year         = "2009",
  volume       = "29",
  number       = "6",
  pages        = "1--23",
  url          = "https://www.jstatsoft.org/article/view/v029i06/"
)

textVersion  =  paste("James E. Helmreich, Robert M. Pruzek (2009).",
        "PSAgraphics: An R Package to Support Propensity Score Analysis.",
        "Journal of Statistical Software 29(6), 1-23.",
        "URL https://www.jstatsoft.org/article/view/v029i06/.",
        "We are grateful to KuangNan Xiong for significant
        work on the functions new to version 2.0:
        cstrata.psa, cv.bal.psa, and cv.trans.psa."
)

