@other{https://resolver.caltech.edu/CaltechEERL:1964.EERL.1964.001,
    title = "Spectrum analyses of strong-motion earthquakes",
    year = "1964",
    url = "https://resolver.caltech.edu/CaltechEERL:1964.EERL.1964.001",
    id = "record"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20140603-154739143,
    title = "Spectrum analysis of strong motion earthquakes",
    year = "1951",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20140603-154739143",
    id = "record"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:MILlberpt33,
    title = "Long Beach Earthquake and Protection Against Future Earthquakes -- Summary of Report by Joint Technical Committee on Earthquake Protection, Dr. Robert A. Millikan, Chairman",
    year = "1933",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:MILlberpt33",
    id = "record"
}