@article{https://resolver.caltech.edu/CaltechAUTHORS:LEEprd73,
    title = "Analysis of the Belinfante-Swihart Theory of Gravity",
    journal = "Physical Review D",
    year = "1973",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:LEEprd73",
    id = "record",
    issn = "2470-0010",
    doi = "10.1103/PhysRevD.7.3578",
    volume = "7"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:THOprd73,
    title = "Foundations for a theory of gravitation theories",
    journal = "Physical Review D",
    year = "1973",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:THOprd73",
    id = "record",
    issn = "2470-0010",
    doi = "10.1103/PhysRevD.7.3563",
    volume = "7"
}