[
  {
    "title": "hbal: Hierarchically Regularized Entropy Balancing",
    "author": [
      {
        "given": "Yiqing",
        "family": "Xu",
        "role": ["aut", "cre"],
        "email": "yiqingxu@stanford.edu",
        "comment": "0000-0003-2041-6671"
      },
      {
        "given": "Eddie",
        "family": "Yang",
        "role": "aut",
        "email": "z5yang@ucsd.edu",
        "comment": {}
      }
    ],
    "year": "2025",
    "note": "R package version 1.2.15",
    "url": "https://github.com/xuyiqing/hbal"
  }
]