@other{https://resolver.caltech.edu/CaltechETD:etd-08272007-084804,
    title = "Single and multiple frequency fiber lasers",
    year = "1993",
    url = "https://resolver.caltech.edu/CaltechETD:etd-08272007-084804",
    id = "record",
    doi = "10.7907/65s0-wf19"
}