@other{https://resolver.caltech.edu/CaltechETD:etd-11302007-145419,
    title = "Grid mixers and power grid oscillators",
    year = "1994",
    url = "https://resolver.caltech.edu/CaltechETD:etd-11302007-145419",
    id = "record",
    doi = "10.7907/fekf-qz14"
}