@other{https://resolver.caltech.edu/CaltechTHESIS:03312017-093136052,
    title = "Thermal Wave Propagation in Helium II",
    year = "1969",
    url = "https://resolver.caltech.edu/CaltechTHESIS:03312017-093136052",
    id = "record",
    doi = "10.7907/3T5S-CN85"
}