@other{https://resolver.caltech.edu/CaltechETD:etd-05252007-143511,
    title = "Topics in Numerical Relativity: The Periodic Standing-Wave Approximation, the Stability of Constraints in Free Evolution, and the Spin of Dynamical Black Holes",
    year = "2007",
    url = "https://resolver.caltech.edu/CaltechETD:etd-05252007-143511",
    id = "record",
    doi = "10.7907/464A-4Y76"
}