@other{https://resolver.caltech.edu/CaltechTHESIS:08262011-121733057,
    title = "I. Application of normal mode theory to seismic source and structure problems. II. Seismic investigations of upper mantle lateral heterogeneity.",
    url = "https://resolver.caltech.edu/CaltechTHESIS:08262011-121733057",
    id = "record",
    doi = "10.7907/H2Q8-X139"
}