@other{https://resolver.caltech.edu/CaltechETD:etd-10042006-112842,
    title = "Analysis of Upper and Lower Mantle Structure Using Shear Waves",
    year = "1983",
    url = "https://resolver.caltech.edu/CaltechETD:etd-10042006-112842",
    id = "record",
    doi = "10.7907/65TN-KN39"
}