@other{https://resolver.caltech.edu/CaltechETD:etd-12202004-091326, title = "Fabrication and testing of NbN/MgO/NbN tunnel junctions for use as high-frequency heterodyne detectors", year = "1991", url = "https://resolver.caltech.edu/CaltechETD:etd-12202004-091326", id = "record", doi = "10.7907/AZ4Q-DF35" }