bibentry(bibtype = "Article",
  title = paste("umx: A library for Structural Equation and Twin Modelling in R"),
  author = c(
    person(c("Timothy", "C."), "Bates"),
    person(c("Michael", "C."), "Neale"),
    person(c("Hermine", "H."), "Maes")
  ),
  journal = "Twin Research and Human Genetics",
  publisher = "Cambridge Press",
  year = 2019,
  volume = "22",
  pages = "27-41",
  doi = "10.1017/thg.2019.2",
  mheader = "To cite package 'umx' in publications use:",
  textVersion = paste(
    "Timothy C. Bates,",
    "Michael C. Neale,",
    "Hermine H. Maes,",
    "(2019). umx: A library for Structural Equation and Twin Modelling in R. Twin Research and Human Genetics,",
    "22, 27-41. DOI:10.1017/thg.2019.2")
)
bibentry(bibtype = "Article",
  title = "umx version 4.5: Extending Twin and Path-Based SEM in R with CLPM, MR-DoC, Definition Variables, Ωnyx Integration, and Censored Distributions",
  author = c(
    person(c("Luis", "F.S."), "Castro-de-Araujo"),
    person(c("Nathan", "A."), "Gillespie"),
    person(c("Michael", "C."), "Neale"),
    person(c("Timothy", "Charles"), "Bates")
  ),
  journal = "Twin Research and Human Genetics",
  year = 2026,
  pages = "1-6",
  doi = "10.1017/thg.2026.10056",
  header = "For the latest developments in umx (version 4.5), please also cite:",
  textVersion = paste(
    "Luis F.S. Castro-de-Araujo, Nathan A. Gillespie, Michael C. Neale, and Timothy Charles Bates",
    "(2026). umx version 4.5: Extending Twin and Path-Based SEM in R with CLPM, MR-DoC, Definition Variables, Ωnyx Integration, and Censored Distributions.",
    "Twin Research and Human Genetics, 1-6. DOI:10.1017/thg.2026.10056")
)
