@other{https://resolver.caltech.edu/CaltechTHESIS:08282017-154628547,
    title = "Metric Theories of Gravity and their Astrophysical Implications",
    year = "1973",
    url = "https://resolver.caltech.edu/CaltechTHESIS:08282017-154628547",
    id = "record",
    doi = "10.7907/MCQM-3M81"
}