@other{https://resolver.caltech.edu/CaltechETD:etd-06242005-160651,
    title = "Radar imaging for aircraft identification and planetary astronomy",
    year = "1991",
    url = "https://resolver.caltech.edu/CaltechETD:etd-06242005-160651",
    id = "record",
    doi = "10.7907/cf3k-sv32"
}