@other{https://resolver.caltech.edu/CaltechETD:etd-10052006-082151,
    title = "Studies of the nonlinear Schrodinger equation and its application to water waves",
    year = "1981",
    url = "https://resolver.caltech.edu/CaltechETD:etd-10052006-082151",
    id = "record",
    doi = "10.7907/by3r-zk43"
}