@other{https://resolver.caltech.edu/CaltechTHESIS:11302012-115924624,
    title = "Quasi-optical sis receivers and astrophysical observations at submillimeter wavelengths",
    year = "1993",
    url = "https://resolver.caltech.edu/CaltechTHESIS:11302012-115924624",
    id = "record",
    doi = "10.7907/1dkj-1503"
}