@other{https://resolver.caltech.edu/CaltechETD:etd-09082005-105846,
    title = "Four-wave mixing in semiconductor optical amplifiers for terahertz spectroscopy and wavelength conversion",
    year = "1995",
    url = "https://resolver.caltech.edu/CaltechETD:etd-09082005-105846",
    id = "record",
    doi = "10.7907/vmke-sz45"
}