@other{https://resolver.caltech.edu/CaltechTHESIS:03252016-135744669,
    title = "Measurements of mantle velocities of P waves with a large array",
    year = "1966",
    url = "https://resolver.caltech.edu/CaltechTHESIS:03252016-135744669",
    id = "record",
    doi = "10.7907/D44Y-6K65"
}