@other{https://resolver.caltech.edu/CaltechTHESIS:05242013-114249496,
    title = "Seismic structure above and below the core-mantle boundary",
    url = "https://resolver.caltech.edu/CaltechTHESIS:05242013-114249496",
    id = "record",
    doi = "10.7907/zsct-z181"
}