[
  {
    "title": "lmm: Linear Mixed Models",
    "author": [
      {
        "given": ["Joseph", "L."],
        "family": "Schafer",
        "role": "aut",
        "email": {},
        "comment": "Original author"
      }
    ],
    "year": "2026",
    "note": "R package version 1.5",
    "url": "https://CRAN.R-project.org/package=lmm"
  }
]